drivers/net/wireless/p54/p54common.c

   1 /*
   2  * Common code for mac80211 Prism54 drivers
   3  *
   4  * Copyright (c) 2006, Michael Wu <flamingice@sourmilk.net>
   5  * Copyright (c) 2007, Christian Lamparter <chunkeey@web.de>
   6  * Copyright 2008, Johannes Berg <johannes@sipsolutions.net>
   7  *
   8  * Based on:
   9  * - the islsm (softmac prism54) driver, which is:
  10  *   Copyright 2004-2006 Jean-Baptiste Note <jbnote@gmail.com>, et al.
  11  * - stlc45xx driver
  12  *   Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies).
  13  *
  14  * This program is free software; you can redistribute it and/or modify
  15  * it under the terms of the GNU General Public License version 2 as
  16  * published by the Free Software Foundation.
  17  */
  18
  19 #include <linux/init.h>
  20 #include <linux/firmware.h>
  21 #include <linux/etherdevice.h>
  22
  23 #include <net/mac80211.h>
  24 #ifdef CONFIG_P54_LEDS
  25 #include <linux/leds.h>
  26 #endif /* CONFIG_P54_LEDS */
  27
  28 #include "p54.h"
  29 #include "p54common.h"
  30
  31 static int modparam_nohwcrypt;
  32 module_param_named(nohwcrypt, modparam_nohwcrypt, bool, S_IRUGO);
  33 MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption.");
  34 MODULE_AUTHOR("Michael Wu <flamingice@sourmilk.net>");
  35 MODULE_DESCRIPTION("Softmac Prism54 common code");
  36 MODULE_LICENSE("GPL");
  37 MODULE_ALIAS("prism54common");
  38
  39 static struct ieee80211_rate p54_bgrates[] = {
  40         { .bitrate = 10, .hw_value = 0, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
  41         { .bitrate = 20, .hw_value = 1, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
  42         { .bitrate = 55, .hw_value = 2, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
  43         { .bitrate = 110, .hw_value = 3, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
  44         { .bitrate = 60, .hw_value = 4, },
  45         { .bitrate = 90, .hw_value = 5, },
  46         { .bitrate = 120, .hw_value = 6, },
  47         { .bitrate = 180, .hw_value = 7, },
  48         { .bitrate = 240, .hw_value = 8, },
  49         { .bitrate = 360, .hw_value = 9, },
  50         { .bitrate = 480, .hw_value = 10, },
  51         { .bitrate = 540, .hw_value = 11, },
  52 };
  53
  54 static struct ieee80211_channel p54_bgchannels[] = {
  55         { .center_freq = 2412, .hw_value = 1, },
  56         { .center_freq = 2417, .hw_value = 2, },
  57         { .center_freq = 2422, .hw_value = 3, },
  58         { .center_freq = 2427, .hw_value = 4, },
  59         { .center_freq = 2432, .hw_value = 5, },
  60         { .center_freq = 2437, .hw_value = 6, },
  61         { .center_freq = 2442, .hw_value = 7, },
  62         { .center_freq = 2447, .hw_value = 8, },
  63         { .center_freq = 2452, .hw_value = 9, },
  64         { .center_freq = 2457, .hw_value = 10, },
  65         { .center_freq = 2462, .hw_value = 11, },
  66         { .center_freq = 2467, .hw_value = 12, },
  67         { .center_freq = 2472, .hw_value = 13, },
  68         { .center_freq = 2484, .hw_value = 14, },
  69 };
  70
  71 static struct ieee80211_supported_band band_2GHz = {
  72         .channels = p54_bgchannels,
  73         .n_channels = ARRAY_SIZE(p54_bgchannels),
  74         .bitrates = p54_bgrates,
  75         .n_bitrates = ARRAY_SIZE(p54_bgrates),
  76 };
  77
  78 static struct ieee80211_rate p54_arates[] = {
  79         { .bitrate = 60, .hw_value = 4, },
  80         { .bitrate = 90, .hw_value = 5, },
  81         { .bitrate = 120, .hw_value = 6, },
  82         { .bitrate = 180, .hw_value = 7, },
  83         { .bitrate = 240, .hw_value = 8, },
  84         { .bitrate = 360, .hw_value = 9, },
  85         { .bitrate = 480, .hw_value = 10, },
  86         { .bitrate = 540, .hw_value = 11, },
  87 };
  88
  89 static struct ieee80211_channel p54_achannels[] = {
  90         { .center_freq = 4920 },
  91         { .center_freq = 4940 },
  92         { .center_freq = 4960 },
  93         { .center_freq = 4980 },
  94         { .center_freq = 5040 },
  95         { .center_freq = 5060 },
  96         { .center_freq = 5080 },
  97         { .center_freq = 5170 },
  98         { .center_freq = 5180 },
  99         { .center_freq = 5190 },
 100         { .center_freq = 5200 },
 101         { .center_freq = 5210 },
 102         { .center_freq = 5220 },
 103         { .center_freq = 5230 },
 104         { .center_freq = 5240 },
 105         { .center_freq = 5260 },
 106         { .center_freq = 5280 },
 107         { .center_freq = 5300 },
 108         { .center_freq = 5320 },
 109         { .center_freq = 5500 },
 110         { .center_freq = 5520 },
 111         { .center_freq = 5540 },
 112         { .center_freq = 5560 },
 113         { .center_freq = 5580 },
 114         { .center_freq = 5600 },
 115         { .center_freq = 5620 },
 116         { .center_freq = 5640 },
 117         { .center_freq = 5660 },
 118         { .center_freq = 5680 },
 119         { .center_freq = 5700 },
 120         { .center_freq = 5745 },
 121         { .center_freq = 5765 },
 122         { .center_freq = 5785 },
 123         { .center_freq = 5805 },
 124         { .center_freq = 5825 },
 125 };
 126
 127 static struct ieee80211_supported_band band_5GHz = {
 128         .channels = p54_achannels,
 129         .n_channels = ARRAY_SIZE(p54_achannels),
 130         .bitrates = p54_arates,
 131         .n_bitrates = ARRAY_SIZE(p54_arates),
 132 };
 133
 134 int p54_parse_firmware(struct ieee80211_hw *dev, const struct firmware *fw)
 135 {
 136         struct p54_common *priv = dev->priv;
 137         struct bootrec_exp_if *exp_if;
 138         struct bootrec *bootrec;
 139         u32 *data = (u32 *)fw->data;
 140         u32 *end_data = (u32 *)fw->data + (fw->size >> 2);
 141         u8 *fw_version = NULL;
 142         size_t len;
 143         int i;
 144         int maxlen;
 145
 146         if (priv->rx_start)
 147                 return 0;
 148
 149         while (data < end_data && *data)
 150                 data++;
 151
 152         while (data < end_data && !*data)
 153                 data++;
 154
 155         bootrec = (struct bootrec *) data;
 156
 157         while (bootrec->data <= end_data &&
 158                (bootrec->data + (len = le32_to_cpu(bootrec->len))) <= end_data) {
 159                 u32 code = le32_to_cpu(bootrec->code);
 160                 switch (code) {
 161                 case BR_CODE_COMPONENT_ID:
 162                         priv->fw_interface = be32_to_cpup((__be32 *)
 163                                              bootrec->data);
 164                         switch (priv->fw_interface) {
 165                         case FW_LM86:
 166                         case FW_LM20:
 167                         case FW_LM87: {
 168                                 char *iftype = (char *)bootrec->data;
 169                                 printk(KERN_INFO "%s: p54 detected a LM%c%c "
 170                                                  "firmware\n",
 171                                         wiphy_name(dev->wiphy),
 172                                         iftype[2], iftype[3]);
 173                                 break;
 174                                 }
 175                         case FW_FMAC:
 176                         default:
 177                                 printk(KERN_ERR "%s: unsupported firmware\n",
 178                                         wiphy_name(dev->wiphy));
 179                                 return -ENODEV;
 180                         }
 181                         break;
 182                 case BR_CODE_COMPONENT_VERSION:
 183                         /* 24 bytes should be enough for all firmwares */
 184                         if (strnlen((unsigned char*)bootrec->data, 24) < 24)
 185                                 fw_version = (unsigned char*)bootrec->data;
 186                         break;
 187                 case BR_CODE_DESCR: {
 188                         struct bootrec_desc *desc =
 189                                 (struct bootrec_desc *)bootrec->data;
 190                         priv->rx_start = le32_to_cpu(desc->rx_start);
 191                         /* FIXME add sanity checking */
 192                         priv->rx_end = le32_to_cpu(desc->rx_end) - 0x3500;
 193                         priv->headroom = desc->headroom;
 194                         priv->tailroom = desc->tailroom;
 195                         priv->privacy_caps = desc->privacy_caps;
 196                         priv->rx_keycache_size = desc->rx_keycache_size;
 197                         if (le32_to_cpu(bootrec->len) == 11)
 198                                 priv->rx_mtu = le16_to_cpu(desc->rx_mtu);
 199                         else
 200                                 priv->rx_mtu = (size_t)
 201                                         0x620 - priv->tx_hdr_len;
 202                         maxlen = priv->tx_hdr_len + /* USB devices */
 203                                  sizeof(struct p54_rx_data) +
 204                                  4 + /* rx alignment */
 205                                  IEEE80211_MAX_FRAG_THRESHOLD;
 206                         if (priv->rx_mtu > maxlen && PAGE_SIZE == 4096) {
 207                                 printk(KERN_INFO "p54: rx_mtu reduced from %d "
 208                                                  "to %d\n", priv->rx_mtu,
 209                                                  maxlen);
 210                                 priv->rx_mtu = maxlen;
 211                         }
 212                         break;
 213                         }
 214                 case BR_CODE_EXPOSED_IF:
 215                         exp_if = (struct bootrec_exp_if *) bootrec->data;
 216                         for (i = 0; i < (len * sizeof(*exp_if) / 4); i++)
 217                                 if (exp_if[i].if_id == cpu_to_le16(0x1a))
 218                                         priv->fw_var = le16_to_cpu(exp_if[i].variant);
 219                         break;
 220                 case BR_CODE_DEPENDENT_IF:
 221                         break;
 222                 case BR_CODE_END_OF_BRA:
 223                 case LEGACY_BR_CODE_END_OF_BRA:
 224                         end_data = NULL;
 225                         break;
 226                 default:
 227                         break;
 228                 }
 229                 bootrec = (struct bootrec *)&bootrec->data[len];
 230         }
 231
 232         if (fw_version)
 233                 printk(KERN_INFO "%s: FW rev %s - Softmac protocol %x.%x\n",
 234                         wiphy_name(dev->wiphy), fw_version,
 235                         priv->fw_var >> 8, priv->fw_var & 0xff);
 236
 237         if (priv->fw_var < 0x500)
 238                 printk(KERN_INFO "%s: you are using an obsolete firmware. "
 239                        "visit http://wireless.kernel.org/en/users/Drivers/p54 "
 240                        "and grab one for \"kernel >= 2.6.28\"!\n",
 241                         wiphy_name(dev->wiphy));
 242
 243         if (priv->fw_var >= 0x300) {
 244                 /* Firmware supports QoS, use it! */
 245                 priv->tx_stats[P54_QUEUE_AC_VO].limit = 3;
 246                 priv->tx_stats[P54_QUEUE_AC_VI].limit = 4;
 247                 priv->tx_stats[P54_QUEUE_AC_BE].limit = 3;
 248                 priv->tx_stats[P54_QUEUE_AC_BK].limit = 2;
 249                 dev->queues = P54_QUEUE_AC_NUM;
 250         }
 251
 252         if (!modparam_nohwcrypt) {
 253                 printk(KERN_INFO "%s: cryptographic accelerator "
 254                                  "WEP:%s, TKIP:%s, CCMP:%s\n",
 255                         wiphy_name(dev->wiphy),
 256                         (priv->privacy_caps & BR_DESC_PRIV_CAP_WEP) ? "YES" :
 257                         "no", (priv->privacy_caps & (BR_DESC_PRIV_CAP_TKIP |
 258                          BR_DESC_PRIV_CAP_MICHAEL)) ? "YES" : "no",
 259                         (priv->privacy_caps & BR_DESC_PRIV_CAP_AESCCMP) ?
 260                         "YES" : "no");
 261
 262                 if (priv->rx_keycache_size) {
 263                         /*
 264                          * NOTE:
 265                          *
 266                          * The firmware provides at most 255 (0 - 254) slots
 267                          * for keys which are then used to offload decryption.
 268                          * As a result the 255 entry (aka 0xff) can be used
 269                          * safely by the driver to mark keys that didn't fit
 270                          * into the full cache. This trick saves us from
 271                          * keeping a extra list for uploaded keys.
 272                          */
 273
 274                         priv->used_rxkeys = kzalloc(BITS_TO_LONGS(
 275                                 priv->rx_keycache_size), GFP_KERNEL);
 276
 277                         if (!priv->used_rxkeys)
 278                                 return -ENOMEM;
 279                 }
 280         }
 281
 282         return 0;
 283 }
 284 EXPORT_SYMBOL_GPL(p54_parse_firmware);
 285
 286 static int p54_convert_rev0(struct ieee80211_hw *dev,
 287                             struct pda_pa_curve_data *curve_data)
 288 {
 289         struct p54_common *priv = dev->priv;
 290         struct p54_pa_curve_data_sample *dst;
 291         struct pda_pa_curve_data_sample_rev0 *src;
 292         size_t cd_len = sizeof(*curve_data) +
 293                 (curve_data->points_per_channel*sizeof(*dst) + 2) *
 294                  curve_data->channels;
 295         unsigned int i, j;
 296         void *source, *target;
 297
 298         priv->curve_data = kmalloc(sizeof(*priv->curve_data) + cd_len,
 299                                    GFP_KERNEL);
 300         if (!priv->curve_data)
 301                 return -ENOMEM;
 302
 303         priv->curve_data->entries = curve_data->channels;
 304         priv->curve_data->entry_size = sizeof(__le16) +
 305                 sizeof(*dst) * curve_data->points_per_channel;
 306         priv->curve_data->offset = offsetof(struct pda_pa_curve_data, data);
 307         priv->curve_data->len = cd_len;
 308         memcpy(priv->curve_data->data, curve_data, sizeof(*curve_data));
 309         source = curve_data->data;
 310         target = ((struct pda_pa_curve_data *) priv->curve_data->data)->data;
 311         for (i = 0; i < curve_data->channels; i++) {
 312                 __le16 *freq = source;
 313                 source += sizeof(__le16);
 314                 *((__le16 *)target) = *freq;
 315                 target += sizeof(__le16);
 316                 for (j = 0; j < curve_data->points_per_channel; j++) {
 317                         dst = target;
 318                         src = source;
 319
 320                         dst->rf_power = src->rf_power;
 321                         dst->pa_detector = src->pa_detector;
 322                         dst->data_64qam = src->pcv;
 323                         /* "invent" the points for the other modulations */
 324 #define SUB(x,y) (u8)((x) - (y)) > (x) ? 0 : (x) - (y)
 325                         dst->data_16qam = SUB(src->pcv, 12);
 326                         dst->data_qpsk = SUB(dst->data_16qam, 12);
 327                         dst->data_bpsk = SUB(dst->data_qpsk, 12);
 328                         dst->data_barker = SUB(dst->data_bpsk, 14);
 329 #undef SUB
 330                         target += sizeof(*dst);
 331                         source += sizeof(*src);
 332                 }
 333         }
 334
 335         return 0;
 336 }
 337
 338 static int p54_convert_rev1(struct ieee80211_hw *dev,
 339                             struct pda_pa_curve_data *curve_data)
 340 {
 341         struct p54_common *priv = dev->priv;
 342         struct p54_pa_curve_data_sample *dst;
 343         struct pda_pa_curve_data_sample_rev1 *src;
 344         size_t cd_len = sizeof(*curve_data) +
 345                 (curve_data->points_per_channel*sizeof(*dst) + 2) *
 346                  curve_data->channels;
 347         unsigned int i, j;
 348         void *source, *target;
 349
 350         priv->curve_data = kzalloc(cd_len + sizeof(*priv->curve_data),
 351                                    GFP_KERNEL);
 352         if (!priv->curve_data)
 353                 return -ENOMEM;
 354
 355         priv->curve_data->entries = curve_data->channels;
 356         priv->curve_data->entry_size = sizeof(__le16) +
 357                 sizeof(*dst) * curve_data->points_per_channel;
 358         priv->curve_data->offset = offsetof(struct pda_pa_curve_data, data);
 359         priv->curve_data->len = cd_len;
 360         memcpy(priv->curve_data->data, curve_data, sizeof(*curve_data));
 361         source = curve_data->data;
 362         target = ((struct pda_pa_curve_data *) priv->curve_data->data)->data;
 363         for (i = 0; i < curve_data->channels; i++) {
 364                 __le16 *freq = source;
 365                 source += sizeof(__le16);
 366                 *((__le16 *)target) = *freq;
 367                 target += sizeof(__le16);
 368                 for (j = 0; j < curve_data->points_per_channel; j++) {
 369                         memcpy(target, source, sizeof(*src));
 370
 371                         target += sizeof(*dst);
 372                         source += sizeof(*src);
 373                 }
 374                 source++;
 375         }
 376
 377         return 0;
 378 }
 379
 380 static const char *p54_rf_chips[] = { "NULL", "Duette3", "Duette2",
 381                               "Frisbee", "Xbow", "Longbow", "NULL", "NULL" };
 382 static int p54_init_xbow_synth(struct ieee80211_hw *dev);
 383
 384 static void p54_parse_rssical(struct ieee80211_hw *dev, void *data, int len,
 385                              u16 type)
 386 {
 387         struct p54_common *priv = dev->priv;
 388         int offset = (type == PDR_RSSI_LINEAR_APPROXIMATION_EXTENDED) ? 2 : 0;
 389         int entry_size = sizeof(struct pda_rssi_cal_entry) + offset;
 390         int num_entries = (type == PDR_RSSI_LINEAR_APPROXIMATION) ? 1 : 2;
 391         int i;
 392
 393         if (len != (entry_size * num_entries)) {
 394                 printk(KERN_ERR "%s: unknown rssi calibration data packing "
 395                                  " type:(%x) len:%d.\n",
 396                        wiphy_name(dev->wiphy), type, len);
 397
 398                 print_hex_dump_bytes("rssical:", DUMP_PREFIX_NONE,
 399                                      data, len);
 400
 401                 printk(KERN_ERR "%s: please report this issue.\n",
 402                         wiphy_name(dev->wiphy));
 403                 return;
 404         }
 405
 406         for (i = 0; i < num_entries; i++) {
 407                 struct pda_rssi_cal_entry *cal = data +
 408                                                  (offset + i * entry_size);
 409                 priv->rssical_db[i].mul = (s16) le16_to_cpu(cal->mul);
 410                 priv->rssical_db[i].add = (s16) le16_to_cpu(cal->add);
 411         }
 412 }
 413
 414 static void p54_parse_default_country(struct ieee80211_hw *dev,
 415                                       void *data, int len)
 416 {
 417         struct pda_country *country;
 418
 419         if (len != sizeof(*country)) {
 420                 printk(KERN_ERR "%s: found possible invalid default country "
 421                                 "eeprom entry. (entry size: %d)\n",
 422                        wiphy_name(dev->wiphy), len);
 423
 424                 print_hex_dump_bytes("country:", DUMP_PREFIX_NONE,
 425                                      data, len);
 426
 427                 printk(KERN_ERR "%s: please report this issue.\n",
 428                         wiphy_name(dev->wiphy));
 429                 return;
 430         }
 431
 432         country = (struct pda_country *) data;
 433         if (country->flags == PDR_COUNTRY_CERT_CODE_PSEUDO)
 434                 regulatory_hint(dev->wiphy, country->alpha2);
 435         else {
 436                 /* TODO:
 437                  * write a shared/common function that converts
 438                  * "Regulatory domain codes" (802.11-2007 14.8.2.2)
 439                  * into ISO/IEC 3166-1 alpha2 for regulatory_hint.
 440                  */
 441         }
 442 }
 443
 444 static int p54_convert_output_limits(struct ieee80211_hw *dev,
 445                                      u8 *data, size_t len)
 446 {
 447         struct p54_common *priv = dev->priv;
 448
 449         if (len < 2)
 450                 return -EINVAL;
 451
 452         if (data[0] != 0) {
 453                 printk(KERN_ERR "%s: unknown output power db revision:%x\n",
 454                        wiphy_name(dev->wiphy), data[0]);
 455                 return -EINVAL;
 456         }
 457
 458         if (2 + data[1] * sizeof(struct pda_channel_output_limit) > len)
 459                 return -EINVAL;
 460
 461         priv->output_limit = kmalloc(data[1] *
 462                 sizeof(struct pda_channel_output_limit) +
 463                 sizeof(*priv->output_limit), GFP_KERNEL);
 464
 465         if (!priv->output_limit)
 466                 return -ENOMEM;
 467
 468         priv->output_limit->offset = 0;
 469         priv->output_limit->entries = data[1];
 470         priv->output_limit->entry_size =
 471                 sizeof(struct pda_channel_output_limit);
 472         priv->output_limit->len = priv->output_limit->entry_size *
 473                                   priv->output_limit->entries +
 474                                   priv->output_limit->offset;
 475
 476         memcpy(priv->output_limit->data, &data[2],
 477                data[1] * sizeof(struct pda_channel_output_limit));
 478
 479         return 0;
 480 }
 481
 482 static struct p54_cal_database *p54_convert_db(struct pda_custom_wrapper *src,
 483                                                size_t total_len)
 484 {
 485         struct p54_cal_database *dst;
 486         size_t payload_len, entries, entry_size, offset;
 487
 488         payload_len = le16_to_cpu(src->len);
 489         entries = le16_to_cpu(src->entries);
 490         entry_size = le16_to_cpu(src->entry_size);
 491         offset = le16_to_cpu(src->offset);
 492         if (((entries * entry_size + offset) != payload_len) ||
 493              (payload_len + sizeof(*src) != total_len))
 494                 return NULL;
 495
 496         dst = kmalloc(sizeof(*dst) + payload_len, GFP_KERNEL);
 497         if (!dst)
 498                 return NULL;
 499
 500         dst->entries = entries;
 501         dst->entry_size = entry_size;
 502         dst->offset = offset;
 503         dst->len = payload_len;
 504
 505         memcpy(dst->data, src->data, payload_len);
 506         return dst;
 507 }
 508
 509 int p54_parse_eeprom(struct ieee80211_hw *dev, void *eeprom, int len)
 510 {
 511         struct p54_common *priv = dev->priv;
 512         struct eeprom_pda_wrap *wrap = NULL;
 513         struct pda_entry *entry;
 514         unsigned int data_len, entry_len;
 515         void *tmp;
 516         int err;
 517         u8 *end = (u8 *)eeprom + len;
 518         u16 synth = 0;
 519
 520         wrap = (struct eeprom_pda_wrap *) eeprom;
 521         entry = (void *)wrap->data + le16_to_cpu(wrap->len);
 522
 523         /* verify that at least the entry length/code fits */
 524         while ((u8 *)entry <= end - sizeof(*entry)) {
 525                 entry_len = le16_to_cpu(entry->len);
 526                 data_len = ((entry_len - 1) << 1);
 527
 528                 /* abort if entry exceeds whole structure */
 529                 if ((u8 *)entry + sizeof(*entry) + data_len > end)
 530                         break;
 531
 532                 switch (le16_to_cpu(entry->code)) {
 533                 case PDR_MAC_ADDRESS:
 534                         if (data_len != ETH_ALEN)
 535                                 break;
 536                         SET_IEEE80211_PERM_ADDR(dev, entry->data);
 537                         break;
 538                 case PDR_PRISM_PA_CAL_OUTPUT_POWER_LIMITS:
 539                         if (priv->output_limit)
 540                                 break;
 541                         err = p54_convert_output_limits(dev, entry->data,
 542                                                         data_len);
 543                         if (err)
 544                                 goto err;
 545                         break;
 546                 case PDR_PRISM_PA_CAL_CURVE_DATA: {
 547                         struct pda_pa_curve_data *curve_data =
 548                                 (struct pda_pa_curve_data *)entry->data;
 549                         if (data_len < sizeof(*curve_data)) {
 550                                 err = -EINVAL;
 551                                 goto err;
 552                         }
 553
 554                         switch (curve_data->cal_method_rev) {
 555                         case 0:
 556                                 err = p54_convert_rev0(dev, curve_data);
 557                                 break;
 558                         case 1:
 559                                 err = p54_convert_rev1(dev, curve_data);
 560                                 break;
 561                         default:
 562                                 printk(KERN_ERR "%s: unknown curve data "
 563                                                 "revision %d\n",
 564                                                 wiphy_name(dev->wiphy),
 565                                                 curve_data->cal_method_rev);
 566                                 err = -ENODEV;
 567                                 break;
 568                         }
 569                         if (err)
 570                                 goto err;
 571                         }
 572                         break;
 573                 case PDR_PRISM_ZIF_TX_IQ_CALIBRATION:
 574                         priv->iq_autocal = kmalloc(data_len, GFP_KERNEL);
 575                         if (!priv->iq_autocal) {
 576                                 err = -ENOMEM;
 577                                 goto err;
 578                         }
 579
 580                         memcpy(priv->iq_autocal, entry->data, data_len);
 581                         priv->iq_autocal_len = data_len / sizeof(struct pda_iq_autocal_entry);
 582                         break;
 583                 case PDR_DEFAULT_COUNTRY:
 584                         p54_parse_default_country(dev, entry->data, data_len);
 585                         break;
 586                 case PDR_INTERFACE_LIST:
 587                         tmp = entry->data;
 588                         while ((u8 *)tmp < entry->data + data_len) {
 589                                 struct bootrec_exp_if *exp_if = tmp;
 590                                 if (le16_to_cpu(exp_if->if_id) == 0xf)
 591                                         synth = le16_to_cpu(exp_if->variant);
 592                                 tmp += sizeof(struct bootrec_exp_if);
 593                         }
 594                         break;
 595                 case PDR_HARDWARE_PLATFORM_COMPONENT_ID:
 596                         if (data_len < 2)
 597                                 break;
 598                         priv->version = *(u8 *)(entry->data + 1);
 599                         break;
 600                 case PDR_RSSI_LINEAR_APPROXIMATION:
 601                 case PDR_RSSI_LINEAR_APPROXIMATION_DUAL_BAND:
 602                 case PDR_RSSI_LINEAR_APPROXIMATION_EXTENDED:
 603                         p54_parse_rssical(dev, entry->data, data_len,
 604                                           le16_to_cpu(entry->code));
 605                         break;
 606                 case PDR_RSSI_LINEAR_APPROXIMATION_CUSTOM: {
 607                         __le16 *src = (void *) entry->data;
 608                         s16 *dst = (void *) &priv->rssical_db;
 609                         int i;
 610
 611                         if (data_len != sizeof(priv->rssical_db)) {
 612                                 err = -EINVAL;
 613                                 goto err;
 614                         }
 615                         for (i = 0; i < sizeof(priv->rssical_db) /
 616                                         sizeof(*src); i++)
 617                                 *(dst++) = (s16) le16_to_cpu(*(src++));
 618                         }
 619                         break;
 620                 case PDR_PRISM_PA_CAL_OUTPUT_POWER_LIMITS_CUSTOM: {
 621                         struct pda_custom_wrapper *pda = (void *) entry->data;
 622                         if (priv->output_limit || data_len < sizeof(*pda))
 623                                 break;
 624                         priv->output_limit = p54_convert_db(pda, data_len);
 625                         }
 626                         break;
 627                 case PDR_PRISM_PA_CAL_CURVE_DATA_CUSTOM: {
 628                         struct pda_custom_wrapper *pda = (void *) entry->data;
 629                         if (priv->curve_data || data_len < sizeof(*pda))
 630                                 break;
 631                         priv->curve_data = p54_convert_db(pda, data_len);
 632                         }
 633                         break;
 634                 case PDR_END:
 635                         /* make it overrun */
 636                         entry_len = len;
 637                         break;
 638                 case PDR_MANUFACTURING_PART_NUMBER:
 639                 case PDR_PDA_VERSION:
 640                 case PDR_NIC_SERIAL_NUMBER:
 641                 case PDR_REGULATORY_DOMAIN_LIST:
 642                 case PDR_TEMPERATURE_TYPE:
 643                 case PDR_PRISM_PCI_IDENTIFIER:
 644                 case PDR_COUNTRY_INFORMATION:
 645                 case PDR_OEM_NAME:
 646                 case PDR_PRODUCT_NAME:
 647                 case PDR_UTF8_OEM_NAME:
 648                 case PDR_UTF8_PRODUCT_NAME:
 649                 case PDR_COUNTRY_LIST:
 650                 case PDR_ANTENNA_GAIN:
 651                 case PDR_PRISM_INDIGO_PA_CALIBRATION_DATA:
 652                 case PDR_REGULATORY_POWER_LIMITS:
 653                 case PDR_RADIATED_TRANSMISSION_CORRECTION:
 654                 case PDR_PRISM_TX_IQ_CALIBRATION:
 655                 case PDR_BASEBAND_REGISTERS:
 656                 case PDR_PER_CHANNEL_BASEBAND_REGISTERS:
 657                         break;
 658                 default:
 659                         printk(KERN_INFO "%s: unknown eeprom code : 0x%x\n",
 660                                 wiphy_name(dev->wiphy),
 661                                 le16_to_cpu(entry->code));
 662                         break;
 663                 }
 664
 665                 entry = (void *)entry + (entry_len + 1)*2;
 666         }
 667
 668         if (!synth || !priv->iq_autocal || !priv->output_limit ||
 669             !priv->curve_data) {
 670                 printk(KERN_ERR "%s: not all required entries found in eeprom!\n",
 671                         wiphy_name(dev->wiphy));
 672                 err = -EINVAL;
 673                 goto err;
 674         }
 675
 676         priv->rxhw = synth & PDR_SYNTH_FRONTEND_MASK;
 677         if (priv->rxhw == PDR_SYNTH_FRONTEND_XBOW)
 678                 p54_init_xbow_synth(dev);
 679         if (!(synth & PDR_SYNTH_24_GHZ_DISABLED))
 680                 dev->wiphy->bands[IEEE80211_BAND_2GHZ] = &band_2GHz;
 681         if (!(synth & PDR_SYNTH_5_GHZ_DISABLED))
 682                 dev->wiphy->bands[IEEE80211_BAND_5GHZ] = &band_5GHz;
 683         if ((synth & PDR_SYNTH_RX_DIV_MASK) == PDR_SYNTH_RX_DIV_SUPPORTED)
 684                 priv->rx_diversity_mask = 3;
 685         if ((synth & PDR_SYNTH_TX_DIV_MASK) == PDR_SYNTH_TX_DIV_SUPPORTED)
 686                 priv->tx_diversity_mask = 3;
 687
 688         if (!is_valid_ether_addr(dev->wiphy->perm_addr)) {
 689                 u8 perm_addr[ETH_ALEN];
 690
 691                 printk(KERN_WARNING "%s: Invalid hwaddr! Using randomly generated MAC addr\n",
 692                         wiphy_name(dev->wiphy));
 693                 random_ether_addr(perm_addr);
 694                 SET_IEEE80211_PERM_ADDR(dev, perm_addr);
 695         }
 696
 697         printk(KERN_INFO "%s: hwaddr %pM, MAC:isl38%02x RF:%s\n",
 698                 wiphy_name(dev->wiphy),
 699                 dev->wiphy->perm_addr,
 700                 priv->version, p54_rf_chips[priv->rxhw]);
 701
 702         return 0;
 703
 704   err:
 705         if (priv->iq_autocal) {
 706                 kfree(priv->iq_autocal);
 707                 priv->iq_autocal = NULL;
 708         }
 709
 710         if (priv->output_limit) {
 711                 kfree(priv->output_limit);
 712                 priv->output_limit = NULL;
 713         }
 714
 715         if (priv->curve_data) {
 716                 kfree(priv->curve_data);
 717                 priv->curve_data = NULL;
 718         }
 719
 720         printk(KERN_ERR "%s: eeprom parse failed!\n",
 721                 wiphy_name(dev->wiphy));
 722         return err;
 723 }
 724 EXPORT_SYMBOL_GPL(p54_parse_eeprom);
 725
 726 static int p54_rssi_to_dbm(struct ieee80211_hw *dev, int rssi)
 727 {
 728         struct p54_common *priv = dev->priv;
 729         int band = dev->conf.channel->band;
 730
 731         if (priv->rxhw != PDR_SYNTH_FRONTEND_LONGBOW)
 732                 return ((rssi * priv->rssical_db[band].mul) / 64 +
 733                          priv->rssical_db[band].add) / 4;
 734         else
 735                 /*
 736                  * TODO: find the correct formula
 737                  */
 738                 return ((rssi * priv->rssical_db[band].mul) / 64 +
 739                          priv->rssical_db[band].add) / 4;
 740 }
 741
 742 static int p54_rx_data(struct ieee80211_hw *dev, struct sk_buff *skb)
 743 {
 744         struct p54_common *priv = dev->priv;
 745         struct p54_rx_data *hdr = (struct p54_rx_data *) skb->data;
 746         struct ieee80211_rx_status rx_status = {0};
 747         u16 freq = le16_to_cpu(hdr->freq);
 748         size_t header_len = sizeof(*hdr);
 749         u32 tsf32;
 750         u8 rate = hdr->rate & 0xf;
 751
 752         /*
 753          * If the device is in a unspecified state we have to
 754          * ignore all data frames. Else we could end up with a
 755          * nasty crash.
 756          */
 757         if (unlikely(priv->mode == NL80211_IFTYPE_UNSPECIFIED))
 758                 return 0;
 759
 760         if (!(hdr->flags & cpu_to_le16(P54_HDR_FLAG_DATA_IN_FCS_GOOD))) {
 761                 return 0;
 762         }
 763
 764         if (hdr->decrypt_status == P54_DECRYPT_OK)
 765                 rx_status.flag |= RX_FLAG_DECRYPTED;
 766         if ((hdr->decrypt_status == P54_DECRYPT_FAIL_MICHAEL) ||
 767             (hdr->decrypt_status == P54_DECRYPT_FAIL_TKIP))
 768                 rx_status.flag |= RX_FLAG_MMIC_ERROR;
 769
 770         rx_status.signal = p54_rssi_to_dbm(dev, hdr->rssi);
 771         rx_status.noise = priv->noise;
 772         if (hdr->rate & 0x10)
 773                 rx_status.flag |= RX_FLAG_SHORTPRE;
 774         if (dev->conf.channel->band == IEEE80211_BAND_5GHZ)
 775                 rx_status.rate_idx = (rate < 4) ? 0 : rate - 4;
 776         else
 777                 rx_status.rate_idx = rate;
 778
 779         rx_status.freq = freq;
 780         rx_status.band =  dev->conf.channel->band;
 781         rx_status.antenna = hdr->antenna;
 782
 783         tsf32 = le32_to_cpu(hdr->tsf32);
 784         if (tsf32 < priv->tsf_low32)
 785                 priv->tsf_high32++;
 786         rx_status.mactime = ((u64)priv->tsf_high32) << 32 | tsf32;
 787         priv->tsf_low32 = tsf32;
 788
 789         rx_status.flag |= RX_FLAG_TSFT;
 790
 791         if (hdr->flags & cpu_to_le16(P54_HDR_FLAG_DATA_ALIGN))
 792                 header_len += hdr->align[0];
 793
 794         skb_pull(skb, header_len);
 795         skb_trim(skb, le16_to_cpu(hdr->len));
 796
 797         ieee80211_rx_irqsafe(dev, skb, &rx_status);
 798
 799         queue_delayed_work(dev->workqueue, &priv->work,
 800                            msecs_to_jiffies(P54_STATISTICS_UPDATE));
 801
 802         return -1;
 803 }
 804
 805 static void inline p54_wake_free_queues(struct ieee80211_hw *dev)
 806 {
 807         struct p54_common *priv = dev->priv;
 808         int i;
 809
 810         if (priv->mode == NL80211_IFTYPE_UNSPECIFIED)
 811                 return ;
 812
 813         for (i = 0; i < dev->queues; i++)
 814                 if (priv->tx_stats[i + P54_QUEUE_DATA].len <
 815                     priv->tx_stats[i + P54_QUEUE_DATA].limit)
 816                         ieee80211_wake_queue(dev, i);
 817 }
 818
 819 void p54_free_skb(struct ieee80211_hw *dev, struct sk_buff *skb)
 820 {
 821         struct p54_common *priv = dev->priv;
 822         struct ieee80211_tx_info *info;
 823         struct p54_tx_info *range;
 824         unsigned long flags;
 825
 826         if (unlikely(!skb || !dev || skb_queue_empty(&priv->tx_queue)))
 827                 return;
 828
 829         /* There used to be a check here to see if the SKB was on the
 830          * TX queue or not.  This can never happen because all SKBs we
 831          * see here successfully went through p54_assign_address()
 832          * which means the SKB is on the ->tx_queue.
 833          */
 834
 835         spin_lock_irqsave(&priv->tx_queue.lock, flags);
 836         info = IEEE80211_SKB_CB(skb);
 837         range = (void *)info->rate_driver_data;
 838         if (!skb_queue_is_first(&priv->tx_queue, skb)) {
 839                 struct ieee80211_tx_info *ni;
 840                 struct p54_tx_info *mr;
 841
 842                 ni = IEEE80211_SKB_CB(skb_queue_prev(&priv->tx_queue, skb));
 843                 mr = (struct p54_tx_info *)ni->rate_driver_data;
 844         }
 845         if (!skb_queue_is_last(&priv->tx_queue, skb)) {
 846                 struct ieee80211_tx_info *ni;
 847                 struct p54_tx_info *mr;
 848
 849                 ni = IEEE80211_SKB_CB(skb_queue_next(&priv->tx_queue, skb));
 850                 mr = (struct p54_tx_info *)ni->rate_driver_data;
 851         }
 852         __skb_unlink(skb, &priv->tx_queue);
 853         spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
 854         dev_kfree_skb_any(skb);
 855         p54_wake_free_queues(dev);
 856 }
 857 EXPORT_SYMBOL_GPL(p54_free_skb);
 858
 859 static struct sk_buff *p54_find_tx_entry(struct ieee80211_hw *dev,
 860                                            __le32 req_id)
 861 {
 862         struct p54_common *priv = dev->priv;
 863         struct sk_buff *entry;
 864         unsigned long flags;
 865
 866         spin_lock_irqsave(&priv->tx_queue.lock, flags);
 867         skb_queue_walk(&priv->tx_queue, entry) {
 868                 struct p54_hdr *hdr = (struct p54_hdr *) entry->data;
 869
 870                 if (hdr->req_id == req_id) {
 871                         spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
 872                         return entry;
 873                 }
 874         }
 875         spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
 876         return NULL;
 877 }
 878
 879 static void p54_rx_frame_sent(struct ieee80211_hw *dev, struct sk_buff *skb)
 880 {
 881         struct p54_common *priv = dev->priv;
 882         struct p54_hdr *hdr = (struct p54_hdr *) skb->data;
 883         struct p54_frame_sent *payload = (struct p54_frame_sent *) hdr->data;
 884         struct sk_buff *entry;
 885         u32 addr = le32_to_cpu(hdr->req_id) - priv->headroom;
 886         struct p54_tx_info *range = NULL;
 887         unsigned long flags;
 888         int count, idx;
 889
 890         spin_lock_irqsave(&priv->tx_queue.lock, flags);
 891         skb_queue_walk(&priv->tx_queue, entry) {
 892                 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(entry);
 893                 struct p54_hdr *entry_hdr;
 894                 struct p54_tx_data *entry_data;
 895                 unsigned int pad = 0, frame_len;
 896
 897                 range = (void *)info->rate_driver_data;
 898                 if (range->start_addr != addr)
 899                         continue;
 900
 901                 if (!skb_queue_is_last(&priv->tx_queue, entry)) {
 902                         struct ieee80211_tx_info *ni;
 903                         struct p54_tx_info *mr;
 904
 905                         ni = IEEE80211_SKB_CB(skb_queue_next(&priv->tx_queue,
 906                                                              entry));
 907                         mr = (struct p54_tx_info *)ni->rate_driver_data;
 908                 }
 909
 910                 __skb_unlink(entry, &priv->tx_queue);
 911                 spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
 912
 913                 frame_len = entry->len;
 914                 entry_hdr = (struct p54_hdr *) entry->data;
 915                 entry_data = (struct p54_tx_data *) entry_hdr->data;
 916                 priv->tx_stats[entry_data->hw_queue].len--;
 917                 priv->stats.dot11ACKFailureCount += payload->tries - 1;
 918
 919                 /*
 920                  * Frames in P54_QUEUE_FWSCAN and P54_QUEUE_BEACON are
 921                  * generated by the driver. Therefore tx_status is bogus
 922                  * and we don't want to confuse the mac80211 stack.
 923                  */
 924                 if (unlikely(entry_data->hw_queue < P54_QUEUE_FWSCAN)) {
 925                         if (entry_data->hw_queue == P54_QUEUE_BEACON)
 926                                 priv->cached_beacon = NULL;
 927
 928                         kfree_skb(entry);
 929                         goto out;
 930                 }
 931
 932                 /*
 933                  * Clear manually, ieee80211_tx_info_clear_status would
 934                  * clear the counts too and we need them.
 935                  */
 936                 memset(&info->status.ampdu_ack_len, 0,
 937                        sizeof(struct ieee80211_tx_info) -
 938                        offsetof(struct ieee80211_tx_info, status.ampdu_ack_len));
 939                 BUILD_BUG_ON(offsetof(struct ieee80211_tx_info,
 940                                       status.ampdu_ack_len) != 23);
 941
 942                 if (entry_hdr->flags & cpu_to_le16(P54_HDR_FLAG_DATA_ALIGN))
 943                         pad = entry_data->align[0];
 944
 945                 /* walk through the rates array and adjust the counts */
 946                 count = payload->tries;
 947                 for (idx = 0; idx < 4; idx++) {
 948                         if (count >= info->status.rates[idx].count) {
 949                                 count -= info->status.rates[idx].count;
 950                         } else if (count > 0) {
 951                                 info->status.rates[idx].count = count;
 952                                 count = 0;
 953                         } else {
 954                                 info->status.rates[idx].idx = -1;
 955                                 info->status.rates[idx].count = 0;
 956                         }
 957                 }
 958
 959                 if (!(info->flags & IEEE80211_TX_CTL_NO_ACK) &&
 960                      (!payload->status))
 961                         info->flags |= IEEE80211_TX_STAT_ACK;
 962                 if (payload->status & P54_TX_PSM_CANCELLED)
 963                         info->flags |= IEEE80211_TX_STAT_TX_FILTERED;
 964                 info->status.ack_signal = p54_rssi_to_dbm(dev,
 965                                 (int)payload->ack_rssi);
 966
 967                 /* Undo all changes to the frame. */
 968                 switch (entry_data->key_type) {
 969                 case P54_CRYPTO_TKIPMICHAEL: {
 970                         u8 *iv = (u8 *)(entry_data->align + pad +
 971                                         entry_data->crypt_offset);
 972
 973                         /* Restore the original TKIP IV. */
 974                         iv[2] = iv[0];
 975                         iv[0] = iv[1];
 976                         iv[1] = (iv[0] | 0x20) & 0x7f;  /* WEPSeed - 8.3.2.2 */
 977
 978                         frame_len -= 12; /* remove TKIP_MMIC + TKIP_ICV */
 979                         break;
 980                         }
 981                 case P54_CRYPTO_AESCCMP:
 982                         frame_len -= 8; /* remove CCMP_MIC */
 983                         break;
 984                 case P54_CRYPTO_WEP:
 985                         frame_len -= 4; /* remove WEP_ICV */
 986                         break;
 987                 }
 988                 skb_trim(entry, frame_len);
 989                 skb_pull(entry, sizeof(*hdr) + pad + sizeof(*entry_data));
 990                 ieee80211_tx_status_irqsafe(dev, entry);
 991                 goto out;
 992         }
 993         spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
 994
 995 out:
 996         p54_wake_free_queues(dev);
 997 }
 998
 999 static void p54_rx_eeprom_readback(struct ieee80211_hw *dev,
1000                                    struct sk_buff *skb)
1001 {
1002         struct p54_hdr *hdr = (struct p54_hdr *) skb->data;
1003         struct p54_eeprom_lm86 *eeprom = (struct p54_eeprom_lm86 *) hdr->data;
1004         struct p54_common *priv = dev->priv;
1005
1006         if (!priv->eeprom)
1007                 return ;
1008
1009         if (priv->fw_var >= 0x509) {
1010                 memcpy(priv->eeprom, eeprom->v2.data,
1011                        le16_to_cpu(eeprom->v2.len));
1012         } else {
1013                 memcpy(priv->eeprom, eeprom->v1.data,
1014                        le16_to_cpu(eeprom->v1.len));
1015         }
1016
1017         complete(&priv->eeprom_comp);
1018 }
1019
1020 static void p54_rx_stats(struct ieee80211_hw *dev, struct sk_buff *skb)
1021 {
1022         struct p54_common *priv = dev->priv;
1023         struct p54_hdr *hdr = (struct p54_hdr *) skb->data;
1024         struct p54_statistics *stats = (struct p54_statistics *) hdr->data;
1025         u32 tsf32;
1026
1027         if (unlikely(priv->mode == NL80211_IFTYPE_UNSPECIFIED))
1028                 return ;
1029
1030         tsf32 = le32_to_cpu(stats->tsf32);
1031         if (tsf32 < priv->tsf_low32)
1032                 priv->tsf_high32++;
1033         priv->tsf_low32 = tsf32;
1034
1035         priv->stats.dot11RTSFailureCount = le32_to_cpu(stats->rts_fail);
1036         priv->stats.dot11RTSSuccessCount = le32_to_cpu(stats->rts_success);
1037         priv->stats.dot11FCSErrorCount = le32_to_cpu(stats->rx_bad_fcs);
1038
1039         priv->noise = p54_rssi_to_dbm(dev, le32_to_cpu(stats->noise));
1040
1041         p54_free_skb(dev, p54_find_tx_entry(dev, hdr->req_id));
1042 }
1043
1044 static void p54_rx_trap(struct ieee80211_hw *dev, struct sk_buff *skb)
1045 {
1046         struct p54_common *priv = dev->priv;
1047         struct p54_hdr *hdr = (struct p54_hdr *) skb->data;
1048         struct p54_trap *trap = (struct p54_trap *) hdr->data;
1049         u16 event = le16_to_cpu(trap->event);
1050         u16 freq = le16_to_cpu(trap->frequency);
1051
1052         switch (event) {
1053         case P54_TRAP_BEACON_TX:
1054                 break;
1055         case P54_TRAP_RADAR:
1056                 printk(KERN_INFO "%s: radar (freq:%d MHz)\n",
1057                         wiphy_name(dev->wiphy), freq);
1058                 break;
1059         case P54_TRAP_NO_BEACON:
1060                 if (priv->vif)
1061                         ieee80211_beacon_loss(priv->vif);
1062                 break;
1063         case P54_TRAP_SCAN:
1064                 break;
1065         case P54_TRAP_TBTT:
1066                 break;
1067         case P54_TRAP_TIMER:
1068                 break;
1069         default:
1070                 printk(KERN_INFO "%s: received event:%x freq:%d\n",
1071                        wiphy_name(dev->wiphy), event, freq);
1072                 break;
1073         }
1074 }
1075
1076 static int p54_rx_control(struct ieee80211_hw *dev, struct sk_buff *skb)
1077 {
1078         struct p54_hdr *hdr = (struct p54_hdr *) skb->data;
1079
1080         switch (le16_to_cpu(hdr->type)) {
1081         case P54_CONTROL_TYPE_TXDONE:
1082                 p54_rx_frame_sent(dev, skb);
1083                 break;
1084         case P54_CONTROL_TYPE_TRAP:
1085                 p54_rx_trap(dev, skb);
1086                 break;
1087         case P54_CONTROL_TYPE_BBP:
1088                 break;
1089         case P54_CONTROL_TYPE_STAT_READBACK:
1090                 p54_rx_stats(dev, skb);
1091                 break;
1092         case P54_CONTROL_TYPE_EEPROM_READBACK:
1093                 p54_rx_eeprom_readback(dev, skb);
1094                 break;
1095         default:
1096                 printk(KERN_DEBUG "%s: not handling 0x%02x type control frame\n",
1097                        wiphy_name(dev->wiphy), le16_to_cpu(hdr->type));
1098                 break;
1099         }
1100
1101         return 0;
1102 }
1103
1104 /* returns zero if skb can be reused */
1105 int p54_rx(struct ieee80211_hw *dev, struct sk_buff *skb)
1106 {
1107         u16 type = le16_to_cpu(*((__le16 *)skb->data));
1108
1109         if (type & P54_HDR_FLAG_CONTROL)
1110                 return p54_rx_control(dev, skb);
1111         else
1112                 return p54_rx_data(dev, skb);
1113 }
1114 EXPORT_SYMBOL_GPL(p54_rx);
1115
1116 /*
1117  * So, the firmware is somewhat stupid and doesn't know what places in its
1118  * memory incoming data should go to. By poking around in the firmware, we
1119  * can find some unused memory to upload our packets to. However, data that we
1120  * want the card to TX needs to stay intact until the card has told us that
1121  * it is done with it. This function finds empty places we can upload to and
1122  * marks allocated areas as reserved if necessary. p54_rx_frame_sent or
1123  * p54_free_skb frees allocated areas.
1124  */
1125 static int p54_assign_address(struct ieee80211_hw *dev, struct sk_buff *skb,
1126                                struct p54_hdr *data, u32 len)
1127 {
1128         struct p54_common *priv = dev->priv;
1129         struct sk_buff *entry;
1130         struct sk_buff *target_skb = NULL;
1131         struct ieee80211_tx_info *info;
1132         struct p54_tx_info *range;
1133         u32 last_addr = priv->rx_start;
1134         u32 largest_hole = 0;
1135         u32 target_addr = priv->rx_start;
1136         unsigned long flags;
1137         unsigned int left;
1138         len = (len + priv->headroom + priv->tailroom + 3) & ~0x3;
1139
1140         if (!skb)
1141                 return -EINVAL;
1142
1143         spin_lock_irqsave(&priv->tx_queue.lock, flags);
1144
1145         left = skb_queue_len(&priv->tx_queue);
1146         if (unlikely(left >= 28)) {
1147                 /*
1148                  * The tx_queue is nearly full!
1149                  * We have throttle normal data traffic, because we must
1150                  * have a few spare slots for control frames left.
1151                  */
1152                 ieee80211_stop_queues(dev);
1153                 queue_delayed_work(dev->workqueue, &priv->work,
1154                                    msecs_to_jiffies(P54_TX_TIMEOUT));
1155
1156                 if (unlikely(left == 32)) {
1157                         /*
1158                          * The tx_queue is now really full.
1159                          *
1160                          * TODO: check if the device has crashed and reset it.
1161                          */
1162                         spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
1163                         return -ENOSPC;
1164                 }
1165         }
1166
1167         skb_queue_walk(&priv->tx_queue, entry) {
1168                 u32 hole_size;
1169                 info = IEEE80211_SKB_CB(entry);
1170                 range = (void *)info->rate_driver_data;
1171                 hole_size = range->start_addr - last_addr;
1172                 if (!target_skb && hole_size >= len) {
1173                         target_skb = skb_queue_prev(&priv->tx_queue, entry);
1174                         hole_size -= len;
1175                         target_addr = last_addr;
1176                 }
1177                 largest_hole = max(largest_hole, hole_size);
1178                 last_addr = range->end_addr;
1179         }
1180         if (!target_skb && priv->rx_end - last_addr >= len) {
1181                 target_skb = skb_peek_tail(&priv->tx_queue);
1182                 largest_hole = max(largest_hole, priv->rx_end - last_addr - len);
1183                 if (!skb_queue_empty(&priv->tx_queue)) {
1184                         info = IEEE80211_SKB_CB(target_skb);
1185                         range = (void *)info->rate_driver_data;
1186                         target_addr = range->end_addr;
1187                 }
1188         } else
1189                 largest_hole = max(largest_hole, priv->rx_end - last_addr);
1190
1191         if (!target_skb) {
1192                 spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
1193                 ieee80211_stop_queues(dev);
1194                 return -ENOSPC;
1195         }
1196
1197         info = IEEE80211_SKB_CB(skb);
1198         range = (void *)info->rate_driver_data;
1199         range->start_addr = target_addr;
1200         range->end_addr = target_addr + len;
1201         __skb_queue_after(&priv->tx_queue, target_skb, skb);
1202         spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
1203
1204         if (largest_hole < priv->headroom + sizeof(struct p54_hdr) +
1205                            48 + IEEE80211_MAX_RTS_THRESHOLD + priv->tailroom)
1206                 ieee80211_stop_queues(dev);
1207
1208         data->req_id = cpu_to_le32(target_addr + priv->headroom);
1209         return 0;
1210 }
1211
1212 static struct sk_buff *p54_alloc_skb(struct ieee80211_hw *dev, u16 hdr_flags,
1213                                      u16 payload_len, u16 type, gfp_t memflags)
1214 {
1215         struct p54_common *priv = dev->priv;
1216         struct p54_hdr *hdr;
1217         struct sk_buff *skb;
1218         size_t frame_len = sizeof(*hdr) + payload_len;
1219
1220         if (frame_len > P54_MAX_CTRL_FRAME_LEN)
1221                 return NULL;
1222
1223         skb = __dev_alloc_skb(priv->tx_hdr_len + frame_len, memflags);
1224         if (!skb)
1225                 return NULL;
1226         skb_reserve(skb, priv->tx_hdr_len);
1227
1228         hdr = (struct p54_hdr *) skb_put(skb, sizeof(*hdr));
1229         hdr->flags = cpu_to_le16(hdr_flags);
1230         hdr->len = cpu_to_le16(payload_len);
1231         hdr->type = cpu_to_le16(type);
1232         hdr->tries = hdr->rts_tries = 0;
1233
1234         if (p54_assign_address(dev, skb, hdr, frame_len)) {
1235                 kfree_skb(skb);
1236                 return NULL;
1237         }
1238         return skb;
1239 }
1240
1241 int p54_read_eeprom(struct ieee80211_hw *dev)
1242 {
1243         struct p54_common *priv = dev->priv;
1244         struct p54_eeprom_lm86 *eeprom_hdr;
1245         struct sk_buff *skb;
1246         size_t eeprom_size = 0x2020, offset = 0, blocksize, maxblocksize;
1247         int ret = -ENOMEM;
1248         void *eeprom = NULL;
1249
1250         maxblocksize = EEPROM_READBACK_LEN;
1251         if (priv->fw_var >= 0x509)
1252                 maxblocksize -= 0xc;
1253         else
1254                 maxblocksize -= 0x4;
1255
1256         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL, sizeof(*eeprom_hdr) +
1257                             maxblocksize, P54_CONTROL_TYPE_EEPROM_READBACK,
1258                             GFP_KERNEL);
1259         if (!skb)
1260                 goto free;
1261         priv->eeprom = kzalloc(EEPROM_READBACK_LEN, GFP_KERNEL);
1262         if (!priv->eeprom)
1263                 goto free;
1264         eeprom = kzalloc(eeprom_size, GFP_KERNEL);
1265         if (!eeprom)
1266                 goto free;
1267
1268         eeprom_hdr = (struct p54_eeprom_lm86 *) skb_put(skb,
1269                      sizeof(*eeprom_hdr) + maxblocksize);
1270
1271         while (eeprom_size) {
1272                 blocksize = min(eeprom_size, maxblocksize);
1273                 if (priv->fw_var < 0x509) {
1274                         eeprom_hdr->v1.offset = cpu_to_le16(offset);
1275                         eeprom_hdr->v1.len = cpu_to_le16(blocksize);
1276                 } else {
1277                         eeprom_hdr->v2.offset = cpu_to_le32(offset);
1278                         eeprom_hdr->v2.len = cpu_to_le16(blocksize);
1279                         eeprom_hdr->v2.magic2 = 0xf;
1280                         memcpy(eeprom_hdr->v2.magic, (const char *)"LOCK", 4);
1281                 }
1282                 priv->tx(dev, skb);
1283
1284                 if (!wait_for_completion_interruptible_timeout(&priv->eeprom_comp, HZ)) {
1285                         printk(KERN_ERR "%s: device does not respond!\n",
1286                                 wiphy_name(dev->wiphy));
1287                         ret = -EBUSY;
1288                         goto free;
1289                 }
1290
1291                 memcpy(eeprom + offset, priv->eeprom, blocksize);
1292                 offset += blocksize;
1293                 eeprom_size -= blocksize;
1294         }
1295
1296         ret = p54_parse_eeprom(dev, eeprom, offset);
1297 free:
1298         kfree(priv->eeprom);
1299         priv->eeprom = NULL;
1300         p54_free_skb(dev, skb);
1301         kfree(eeprom);
1302
1303         return ret;
1304 }
1305 EXPORT_SYMBOL_GPL(p54_read_eeprom);
1306
1307 static int p54_set_tim(struct ieee80211_hw *dev, struct ieee80211_sta *sta,
1308                 bool set)
1309 {
1310         struct p54_common *priv = dev->priv;
1311         struct sk_buff *skb;
1312         struct p54_tim *tim;
1313
1314         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*tim),
1315                             P54_CONTROL_TYPE_TIM, GFP_ATOMIC);
1316         if (!skb)
1317                 return -ENOMEM;
1318
1319         tim = (struct p54_tim *) skb_put(skb, sizeof(*tim));
1320         tim->count = 1;
1321         tim->entry[0] = cpu_to_le16(set ? (sta->aid | 0x8000) : sta->aid);
1322         priv->tx(dev, skb);
1323         return 0;
1324 }
1325
1326 static int p54_sta_unlock(struct ieee80211_hw *dev, u8 *addr)
1327 {
1328         struct p54_common *priv = dev->priv;
1329         struct sk_buff *skb;
1330         struct p54_sta_unlock *sta;
1331
1332         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*sta),
1333                             P54_CONTROL_TYPE_PSM_STA_UNLOCK, GFP_ATOMIC);
1334         if (!skb)
1335                 return -ENOMEM;
1336
1337         sta = (struct p54_sta_unlock *)skb_put(skb, sizeof(*sta));
1338         memcpy(sta->addr, addr, ETH_ALEN);
1339         priv->tx(dev, skb);
1340         return 0;
1341 }
1342
1343 static void p54_sta_notify(struct ieee80211_hw *dev, struct ieee80211_vif *vif,
1344                               enum sta_notify_cmd notify_cmd,
1345                               struct ieee80211_sta *sta)
1346 {
1347         switch (notify_cmd) {
1348         case STA_NOTIFY_ADD:
1349         case STA_NOTIFY_REMOVE:
1350                 /*
1351                  * Notify the firmware that we don't want or we don't
1352                  * need to buffer frames for this station anymore.
1353                  */
1354
1355                 p54_sta_unlock(dev, sta->addr);
1356                 break;
1357         case STA_NOTIFY_AWAKE:
1358                 /* update the firmware's filter table */
1359                 p54_sta_unlock(dev, sta->addr);
1360                 break;
1361         default:
1362                 break;
1363         }
1364 }
1365
1366 static int p54_tx_cancel(struct ieee80211_hw *dev, struct sk_buff *entry)
1367 {
1368         struct p54_common *priv = dev->priv;
1369         struct sk_buff *skb;
1370         struct p54_hdr *hdr;
1371         struct p54_txcancel *cancel;
1372
1373         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*cancel),
1374                             P54_CONTROL_TYPE_TXCANCEL, GFP_ATOMIC);
1375         if (!skb)
1376                 return -ENOMEM;
1377
1378         hdr = (void *)entry->data;
1379         cancel = (struct p54_txcancel *)skb_put(skb, sizeof(*cancel));
1380         cancel->req_id = hdr->req_id;
1381         priv->tx(dev, skb);
1382         return 0;
1383 }
1384
1385 static int p54_tx_fill(struct ieee80211_hw *dev, struct sk_buff *skb,
1386                 struct ieee80211_tx_info *info, u8 *queue, size_t *extra_len,
1387                 u16 *flags, u16 *aid)
1388 {
1389         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
1390         struct p54_common *priv = dev->priv;
1391         int ret = 1;
1392
1393         switch (priv->mode) {
1394         case NL80211_IFTYPE_MONITOR:
1395                 /*
1396                  * We have to set P54_HDR_FLAG_DATA_OUT_PROMISC for
1397                  * every frame in promiscuous/monitor mode.
1398                  * see STSW45x0C LMAC API - page 12.
1399                  */
1400                 *aid = 0;
1401                 *flags = P54_HDR_FLAG_DATA_OUT_PROMISC;
1402                 *queue += P54_QUEUE_DATA;
1403                 break;
1404         case NL80211_IFTYPE_STATION:
1405                 *aid = 1;
1406                 if (unlikely(ieee80211_is_mgmt(hdr->frame_control))) {
1407                         *queue = P54_QUEUE_MGMT;
1408                         ret = 0;
1409                 } else
1410                         *queue += P54_QUEUE_DATA;
1411                 break;
1412         case NL80211_IFTYPE_AP:
1413         case NL80211_IFTYPE_ADHOC:
1414         case NL80211_IFTYPE_MESH_POINT:
1415                 if (info->flags & IEEE80211_TX_CTL_SEND_AFTER_DTIM) {
1416                         *aid = 0;
1417                         *queue = P54_QUEUE_CAB;
1418                         return 0;
1419                 }
1420
1421                 if (unlikely(ieee80211_is_mgmt(hdr->frame_control))) {
1422                         if (ieee80211_is_probe_resp(hdr->frame_control)) {
1423                                 *aid = 0;
1424                                 *queue = P54_QUEUE_MGMT;
1425                                 *flags = P54_HDR_FLAG_DATA_OUT_TIMESTAMP |
1426                                          P54_HDR_FLAG_DATA_OUT_NOCANCEL;
1427                                 return 0;
1428                         } else if (ieee80211_is_beacon(hdr->frame_control)) {
1429                                 *aid = 0;
1430
1431                                 if (info->flags & IEEE80211_TX_CTL_INJECTED) {
1432                                         /*
1433                                          * Injecting beacons on top of a AP is
1434                                          * not a good idea... nevertheless,
1435                                          * it should be doable.
1436                                          */
1437
1438                                         *queue += P54_QUEUE_DATA;
1439                                         return 1;
1440                                 }
1441
1442                                 *flags = P54_HDR_FLAG_DATA_OUT_TIMESTAMP;
1443                                 *queue = P54_QUEUE_BEACON;
1444                                 *extra_len = IEEE80211_MAX_TIM_LEN;
1445                                 return 0;
1446                         } else {
1447                                 *queue = P54_QUEUE_MGMT;
1448                                 ret = 0;
1449                         }
1450                 } else
1451                         *queue += P54_QUEUE_DATA;
1452
1453                 if (info->control.sta)
1454                         *aid = info->control.sta->aid;
1455
1456                 if (info->flags & IEEE80211_TX_CTL_CLEAR_PS_FILT)
1457                         *flags |= P54_HDR_FLAG_DATA_OUT_NOCANCEL;
1458                 break;
1459         }
1460         return ret;
1461 }
1462
1463 static u8 p54_convert_algo(enum ieee80211_key_alg alg)
1464 {
1465         switch (alg) {
1466         case ALG_WEP:
1467                 return P54_CRYPTO_WEP;
1468         case ALG_TKIP:
1469                 return P54_CRYPTO_TKIPMICHAEL;
1470         case ALG_CCMP:
1471                 return P54_CRYPTO_AESCCMP;
1472         default:
1473                 return 0;
1474         }
1475 }
1476
1477 static int p54_tx(struct ieee80211_hw *dev, struct sk_buff *skb)
1478 {
1479         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1480         struct ieee80211_tx_queue_stats *current_queue;
1481         struct p54_common *priv = dev->priv;
1482         struct p54_hdr *hdr;
1483         struct p54_tx_data *txhdr;
1484         size_t padding, len, tim_len = 0;
1485         int i, j, ridx, ret;
1486         u16 hdr_flags = 0, aid = 0;
1487         u8 rate, queue, crypt_offset = 0;
1488         u8 cts_rate = 0x20;
1489         u8 rc_flags;
1490         u8 calculated_tries[4];
1491         u8 nrates = 0, nremaining = 8;
1492
1493         queue = skb_get_queue_mapping(skb);
1494
1495         ret = p54_tx_fill(dev, skb, info, &queue, &tim_len, &hdr_flags, &aid);
1496         current_queue = &priv->tx_stats[queue];
1497         if (unlikely((current_queue->len > current_queue->limit) && ret))
1498                 return NETDEV_TX_BUSY;
1499         current_queue->len++;
1500         current_queue->count++;
1501         if ((current_queue->len == current_queue->limit) && ret)
1502                 ieee80211_stop_queue(dev, skb_get_queue_mapping(skb));
1503
1504         padding = (unsigned long)(skb->data - (sizeof(*hdr) + sizeof(*txhdr))) & 3;
1505         len = skb->len;
1506
1507         if (info->control.hw_key) {
1508                 crypt_offset = ieee80211_get_hdrlen_from_skb(skb);
1509                 if (info->control.hw_key->alg == ALG_TKIP) {
1510                         u8 *iv = (u8 *)(skb->data + crypt_offset);
1511                         /*
1512                          * The firmware excepts that the IV has to have
1513                          * this special format
1514                          */
1515                         iv[1] = iv[0];
1516                         iv[0] = iv[2];
1517                         iv[2] = 0;
1518                 }
1519         }
1520
1521         txhdr = (struct p54_tx_data *) skb_push(skb, sizeof(*txhdr) + padding);
1522         hdr = (struct p54_hdr *) skb_push(skb, sizeof(*hdr));
1523
1524         if (padding)
1525                 hdr_flags |= P54_HDR_FLAG_DATA_ALIGN;
1526         hdr->type = cpu_to_le16(aid);
1527         hdr->rts_tries = info->control.rates[0].count;
1528
1529         /*
1530          * we register the rates in perfect order, and
1531          * RTS/CTS won't happen on 5 GHz
1532          */
1533         cts_rate = info->control.rts_cts_rate_idx;
1534
1535         memset(&txhdr->rateset, 0, sizeof(txhdr->rateset));
1536
1537         /* see how many rates got used */
1538         for (i = 0; i < 4; i++) {
1539                 if (info->control.rates[i].idx < 0)
1540                         break;
1541                 nrates++;
1542         }
1543
1544         /* limit tries to 8/nrates per rate */
1545         for (i = 0; i < nrates; i++) {
1546                 /*
1547                  * The magic expression here is equivalent to 8/nrates for
1548                  * all values that matter, but avoids division and jumps.
1549                  * Note that nrates can only take the values 1 through 4.
1550                  */
1551                 calculated_tries[i] = min_t(int, ((15 >> nrates) | 1) + 1,
1552                                                  info->control.rates[i].count);
1553                 nremaining -= calculated_tries[i];
1554         }
1555
1556         /* if there are tries left, distribute from back to front */
1557         for (i = nrates - 1; nremaining > 0 && i >= 0; i--) {
1558                 int tmp = info->control.rates[i].count - calculated_tries[i];
1559
1560                 if (tmp <= 0)
1561                         continue;
1562                 /* RC requested more tries at this rate */
1563
1564                 tmp = min_t(int, tmp, nremaining);
1565                 calculated_tries[i] += tmp;
1566                 nremaining -= tmp;
1567         }
1568
1569         ridx = 0;
1570         for (i = 0; i < nrates && ridx < 8; i++) {
1571                 /* we register the rates in perfect order */
1572                 rate = info->control.rates[i].idx;
1573                 if (info->band == IEEE80211_BAND_5GHZ)
1574                         rate += 4;
1575
1576                 /* store the count we actually calculated for TX status */
1577                 info->control.rates[i].count = calculated_tries[i];
1578
1579                 rc_flags = info->control.rates[i].flags;
1580                 if (rc_flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE) {
1581                         rate |= 0x10;
1582                         cts_rate |= 0x10;
1583                 }
1584                 if (rc_flags & IEEE80211_TX_RC_USE_RTS_CTS)
1585                         rate |= 0x40;
1586                 else if (rc_flags & IEEE80211_TX_RC_USE_CTS_PROTECT)
1587                         rate |= 0x20;
1588                 for (j = 0; j < calculated_tries[i] && ridx < 8; j++) {
1589                         txhdr->rateset[ridx] = rate;
1590                         ridx++;
1591                 }
1592         }
1593
1594         if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ)
1595                 hdr_flags |= P54_HDR_FLAG_DATA_OUT_SEQNR;
1596
1597         /* TODO: enable bursting */
1598         hdr->flags = cpu_to_le16(hdr_flags);
1599         hdr->tries = ridx;
1600         txhdr->rts_rate_idx = 0;
1601         if (info->control.hw_key) {
1602                 txhdr->key_type = p54_convert_algo(info->control.hw_key->alg);
1603                 txhdr->key_len = min((u8)16, info->control.hw_key->keylen);
1604                 memcpy(txhdr->key, info->control.hw_key->key, txhdr->key_len);
1605                 if (info->control.hw_key->alg == ALG_TKIP) {
1606                         if (unlikely(skb_tailroom(skb) < 12))
1607                                 goto err;
1608                         /* reserve space for the MIC key */
1609                         len += 8;
1610                         memcpy(skb_put(skb, 8), &(info->control.hw_key->key
1611                                 [NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY]), 8);
1612                 }
1613                 /* reserve some space for ICV */
1614                 len += info->control.hw_key->icv_len;
1615                 memset(skb_put(skb, info->control.hw_key->icv_len), 0,
1616                        info->control.hw_key->icv_len);
1617         } else {
1618                 txhdr->key_type = 0;
1619                 txhdr->key_len = 0;
1620         }
1621         txhdr->crypt_offset = crypt_offset;
1622         txhdr->hw_queue = queue;
1623         txhdr->backlog = current_queue->len;
1624         memset(txhdr->durations, 0, sizeof(txhdr->durations));
1625         txhdr->tx_antenna = ((info->antenna_sel_tx == 0) ?
1626                 2 : info->antenna_sel_tx - 1) & priv->tx_diversity_mask;
1627         if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW) {
1628                 txhdr->longbow.cts_rate = cts_rate;
1629                 txhdr->longbow.output_power = cpu_to_le16(priv->output_power);
1630         } else {
1631                 txhdr->normal.output_power = priv->output_power;
1632                 txhdr->normal.cts_rate = cts_rate;
1633         }
1634         if (padding)
1635                 txhdr->align[0] = padding;
1636
1637         hdr->len = cpu_to_le16(len);
1638         /* modifies skb->cb and with it info, so must be last! */
1639         if (unlikely(p54_assign_address(dev, skb, hdr, skb->len + tim_len)))
1640                 goto err;
1641         priv->tx(dev, skb);
1642
1643         queue_delayed_work(dev->workqueue, &priv->work,
1644                            msecs_to_jiffies(P54_TX_FRAME_LIFETIME));
1645
1646         return NETDEV_TX_OK;
1647
1648  err:
1649         skb_pull(skb, sizeof(*hdr) + sizeof(*txhdr) + padding);
1650         current_queue->len--;
1651         current_queue->count--;
1652         return NETDEV_TX_BUSY;
1653 }
1654
1655 static int p54_setup_mac(struct ieee80211_hw *dev)
1656 {
1657         struct p54_common *priv = dev->priv;
1658         struct sk_buff *skb;
1659         struct p54_setup_mac *setup;
1660         u16 mode;
1661
1662         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*setup),
1663                             P54_CONTROL_TYPE_SETUP, GFP_ATOMIC);
1664         if (!skb)
1665                 return -ENOMEM;
1666
1667         setup = (struct p54_setup_mac *) skb_put(skb, sizeof(*setup));
1668         if (dev->conf.radio_enabled) {
1669                 switch (priv->mode) {
1670                 case NL80211_IFTYPE_STATION:
1671                         mode = P54_FILTER_TYPE_STATION;
1672                         break;
1673                 case NL80211_IFTYPE_AP:
1674                         mode = P54_FILTER_TYPE_AP;
1675                         break;
1676                 case NL80211_IFTYPE_ADHOC:
1677                 case NL80211_IFTYPE_MESH_POINT:
1678                         mode = P54_FILTER_TYPE_IBSS;
1679                         break;
1680                 case NL80211_IFTYPE_MONITOR:
1681                         mode = P54_FILTER_TYPE_PROMISCUOUS;
1682                         break;
1683                 default:
1684                         mode = P54_FILTER_TYPE_HIBERNATE;
1685                         break;
1686                 }
1687
1688                 /*
1689                  * "TRANSPARENT and PROMISCUOUS are mutually exclusive"
1690                  * STSW45X0C LMAC API - page 12
1691                  */
1692                 if (((priv->filter_flags & FIF_PROMISC_IN_BSS) ||
1693                      (priv->filter_flags & FIF_OTHER_BSS)) &&
1694                     (mode != P54_FILTER_TYPE_PROMISCUOUS))
1695                         mode |= P54_FILTER_TYPE_TRANSPARENT;
1696         } else
1697                 mode = P54_FILTER_TYPE_HIBERNATE;
1698
1699         setup->mac_mode = cpu_to_le16(mode);
1700         memcpy(setup->mac_addr, priv->mac_addr, ETH_ALEN);
1701         memcpy(setup->bssid, priv->bssid, ETH_ALEN);
1702         setup->rx_antenna = 2 & priv->rx_diversity_mask; /* automatic */
1703         setup->rx_align = 0;
1704         if (priv->fw_var < 0x500) {
1705                 setup->v1.basic_rate_mask = cpu_to_le32(priv->basic_rate_mask);
1706                 memset(setup->v1.rts_rates, 0, 8);
1707                 setup->v1.rx_addr = cpu_to_le32(priv->rx_end);
1708                 setup->v1.max_rx = cpu_to_le16(priv->rx_mtu);
1709                 setup->v1.rxhw = cpu_to_le16(priv->rxhw);
1710                 setup->v1.wakeup_timer = cpu_to_le16(priv->wakeup_timer);
1711                 setup->v1.unalloc0 = cpu_to_le16(0);
1712         } else {
1713                 setup->v2.rx_addr = cpu_to_le32(priv->rx_end);
1714                 setup->v2.max_rx = cpu_to_le16(priv->rx_mtu);
1715                 setup->v2.rxhw = cpu_to_le16(priv->rxhw);
1716                 setup->v2.timer = cpu_to_le16(priv->wakeup_timer);
1717                 setup->v2.truncate = cpu_to_le16(48896);
1718                 setup->v2.basic_rate_mask = cpu_to_le32(priv->basic_rate_mask);
1719                 setup->v2.sbss_offset = 0;
1720                 setup->v2.mcast_window = 0;
1721                 setup->v2.rx_rssi_threshold = 0;
1722                 setup->v2.rx_ed_threshold = 0;
1723                 setup->v2.ref_clock = cpu_to_le32(644245094);
1724                 setup->v2.lpf_bandwidth = cpu_to_le16(65535);
1725                 setup->v2.osc_start_delay = cpu_to_le16(65535);
1726         }
1727         priv->tx(dev, skb);
1728         return 0;
1729 }
1730
1731 static int p54_scan(struct ieee80211_hw *dev, u16 mode, u16 dwell)
1732 {
1733         struct p54_common *priv = dev->priv;
1734         struct sk_buff *skb;
1735         struct p54_hdr *hdr;
1736         struct p54_scan_head *head;
1737         struct p54_iq_autocal_entry *iq_autocal;
1738         union p54_scan_body_union *body;
1739         struct p54_scan_tail_rate *rate;
1740         struct pda_rssi_cal_entry *rssi;
1741         unsigned int i;
1742         void *entry;
1743         int band = dev->conf.channel->band;
1744         __le16 freq = cpu_to_le16(dev->conf.channel->center_freq);
1745
1746         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*head) +
1747                             2 + sizeof(*iq_autocal) + sizeof(*body) +
1748                             sizeof(*rate) + 2 * sizeof(*rssi),
1749                             P54_CONTROL_TYPE_SCAN, GFP_ATOMIC);
1750         if (!skb)
1751                 return -ENOMEM;
1752
1753         head = (struct p54_scan_head *) skb_put(skb, sizeof(*head));
1754         memset(head->scan_params, 0, sizeof(head->scan_params));
1755         head->mode = cpu_to_le16(mode);
1756         head->dwell = cpu_to_le16(dwell);
1757         head->freq = freq;
1758
1759         if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW) {
1760                 __le16 *pa_power_points = (__le16 *) skb_put(skb, 2);
1761                 *pa_power_points = cpu_to_le16(0x0c);
1762         }
1763
1764         iq_autocal = (void *) skb_put(skb, sizeof(*iq_autocal));
1765         for (i = 0; i < priv->iq_autocal_len; i++) {
1766                 if (priv->iq_autocal[i].freq != freq)
1767                         continue;
1768
1769                 memcpy(iq_autocal, &priv->iq_autocal[i].params,
1770                        sizeof(struct p54_iq_autocal_entry));
1771                 break;
1772         }
1773         if (i == priv->iq_autocal_len)
1774                 goto err;
1775
1776         if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW)
1777                 body = (void *) skb_put(skb, sizeof(body->longbow));
1778         else
1779                 body = (void *) skb_put(skb, sizeof(body->normal));
1780
1781         for (i = 0; i < priv->output_limit->entries; i++) {
1782                 __le16 *entry_freq = (void *) (priv->output_limit->data +
1783                                      priv->output_limit->entry_size * i);
1784
1785                 if (*entry_freq != freq)
1786                         continue;
1787
1788                 if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW) {
1789                         memcpy(&body->longbow.power_limits,
1790                                (void *) entry_freq + sizeof(__le16),
1791                                priv->output_limit->entry_size);
1792                 } else {
1793                         struct pda_channel_output_limit *limits =
1794                                (void *) entry_freq;
1795
1796                         body->normal.val_barker = 0x38;
1797                         body->normal.val_bpsk = body->normal.dup_bpsk =
1798                                 limits->val_bpsk;
1799                         body->normal.val_qpsk = body->normal.dup_qpsk =
1800                                 limits->val_qpsk;
1801                         body->normal.val_16qam = body->normal.dup_16qam =
1802                                 limits->val_16qam;
1803                         body->normal.val_64qam = body->normal.dup_64qam =
1804                                 limits->val_64qam;
1805                 }
1806                 break;
1807         }
1808         if (i == priv->output_limit->entries)
1809                 goto err;
1810
1811         entry = (void *)(priv->curve_data->data + priv->curve_data->offset);
1812         for (i = 0; i < priv->curve_data->entries; i++) {
1813                 if (*((__le16 *)entry) != freq) {
1814                         entry += priv->curve_data->entry_size;
1815                         continue;
1816                 }
1817
1818                 if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW) {
1819                         memcpy(&body->longbow.curve_data,
1820                                 (void *) entry + sizeof(__le16),
1821                                 priv->curve_data->entry_size);
1822                 } else {
1823                         struct p54_scan_body *chan = &body->normal;
1824                         struct pda_pa_curve_data *curve_data =
1825                                 (void *) priv->curve_data->data;
1826
1827                         entry += sizeof(__le16);
1828                         chan->pa_points_per_curve = 8;
1829                         memset(chan->curve_data, 0, sizeof(*chan->curve_data));
1830                         memcpy(chan->curve_data, entry,
1831                                sizeof(struct p54_pa_curve_data_sample) *
1832                                min((u8)8, curve_data->points_per_channel));
1833                 }
1834                 break;
1835         }
1836         if (i == priv->curve_data->entries)
1837                 goto err;
1838
1839         if ((priv->fw_var >= 0x500) && (priv->fw_var < 0x509)) {
1840                 rate = (void *) skb_put(skb, sizeof(*rate));
1841                 rate->basic_rate_mask = cpu_to_le32(priv->basic_rate_mask);
1842                 for (i = 0; i < sizeof(rate->rts_rates); i++)
1843                         rate->rts_rates[i] = i;
1844         }
1845
1846         rssi = (struct pda_rssi_cal_entry *) skb_put(skb, sizeof(*rssi));
1847         rssi->mul = cpu_to_le16(priv->rssical_db[band].mul);
1848         rssi->add = cpu_to_le16(priv->rssical_db[band].add);
1849         if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW) {
1850                 /* Longbow frontend needs ever more */
1851                 rssi = (void *) skb_put(skb, sizeof(*rssi));
1852                 rssi->mul = cpu_to_le16(priv->rssical_db[band].longbow_unkn);
1853                 rssi->add = cpu_to_le16(priv->rssical_db[band].longbow_unk2);
1854         }
1855
1856         if (priv->fw_var >= 0x509) {
1857                 rate = (void *) skb_put(skb, sizeof(*rate));
1858                 rate->basic_rate_mask = cpu_to_le32(priv->basic_rate_mask);
1859                 for (i = 0; i < sizeof(rate->rts_rates); i++)
1860                         rate->rts_rates[i] = i;
1861         }
1862
1863         hdr = (struct p54_hdr *) skb->data;
1864         hdr->len = cpu_to_le16(skb->len - sizeof(*hdr));
1865
1866         priv->tx(dev, skb);
1867         return 0;
1868
1869  err:
1870         printk(KERN_ERR "%s: frequency change failed\n", wiphy_name(dev->wiphy));
1871         p54_free_skb(dev, skb);
1872         return -EINVAL;
1873 }
1874
1875 static int p54_set_leds(struct ieee80211_hw *dev)
1876 {
1877         struct p54_common *priv = dev->priv;
1878         struct sk_buff *skb;
1879         struct p54_led *led;
1880
1881         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*led),
1882                             P54_CONTROL_TYPE_LED, GFP_ATOMIC);
1883         if (!skb)
1884                 return -ENOMEM;
1885
1886         led = (struct p54_led *) skb_put(skb, sizeof(*led));
1887         led->flags = cpu_to_le16(0x0003);
1888         led->mask[0] = led->mask[1] = cpu_to_le16(priv->softled_state);
1889         led->delay[0] = cpu_to_le16(1);
1890         led->delay[1] = cpu_to_le16(0);
1891         priv->tx(dev, skb);
1892         return 0;
1893 }
1894
1895 #define P54_SET_QUEUE(queue, ai_fs, cw_min, cw_max, _txop)      \
1896 do {                                                            \
1897         queue.aifs = cpu_to_le16(ai_fs);                        \
1898         queue.cwmin = cpu_to_le16(cw_min);                      \
1899         queue.cwmax = cpu_to_le16(cw_max);                      \
1900         queue.txop = cpu_to_le16(_txop);                        \
1901 } while(0)
1902
1903 static int p54_set_edcf(struct ieee80211_hw *dev)
1904 {
1905         struct p54_common *priv = dev->priv;
1906         struct sk_buff *skb;
1907         struct p54_edcf *edcf;
1908
1909         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*edcf),
1910                             P54_CONTROL_TYPE_DCFINIT, GFP_ATOMIC);
1911         if (!skb)
1912                 return -ENOMEM;
1913
1914         edcf = (struct p54_edcf *)skb_put(skb, sizeof(*edcf));
1915         if (priv->use_short_slot) {
1916                 edcf->slottime = 9;
1917                 edcf->sifs = 0x10;
1918                 edcf->eofpad = 0x00;
1919         } else {
1920                 edcf->slottime = 20;
1921                 edcf->sifs = 0x0a;
1922                 edcf->eofpad = 0x06;
1923         }
1924         /* (see prism54/isl_oid.h for further details) */
1925         edcf->frameburst = cpu_to_le16(0);
1926         edcf->round_trip_delay = cpu_to_le16(0);
1927         edcf->flags = 0;
1928         memset(edcf->mapping, 0, sizeof(edcf->mapping));
1929         memcpy(edcf->queue, priv->qos_params, sizeof(edcf->queue));
1930         priv->tx(dev, skb);
1931         return 0;
1932 }
1933
1934 static int p54_set_ps(struct ieee80211_hw *dev)
1935 {
1936         struct p54_common *priv = dev->priv;
1937         struct sk_buff *skb;
1938         struct p54_psm *psm;
1939         u16 mode;
1940         int i;
1941
1942         if (dev->conf.flags & IEEE80211_CONF_PS)
1943                 mode = P54_PSM | P54_PSM_BEACON_TIMEOUT | P54_PSM_DTIM |
1944                        P54_PSM_CHECKSUM | P54_PSM_MCBC;
1945         else
1946                 mode = P54_PSM_CAM;
1947
1948         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*psm),
1949                             P54_CONTROL_TYPE_PSM, GFP_ATOMIC);
1950         if (!skb)
1951                 return -ENOMEM;
1952
1953         psm = (struct p54_psm *)skb_put(skb, sizeof(*psm));
1954         psm->mode = cpu_to_le16(mode);
1955         psm->aid = cpu_to_le16(priv->aid);
1956         for (i = 0; i < ARRAY_SIZE(psm->intervals); i++) {
1957                 psm->intervals[i].interval =
1958                         cpu_to_le16(dev->conf.listen_interval);
1959                 psm->intervals[i].periods = cpu_to_le16(1);
1960         }
1961
1962         psm->beacon_rssi_skip_max = 200;
1963         psm->rssi_delta_threshold = 0;
1964         psm->nr = 10;
1965         psm->exclude[0] = 0;
1966
1967         priv->tx(dev, skb);
1968
1969         return 0;
1970 }
1971
1972 static int p54_beacon_tim(struct sk_buff *skb)
1973 {
1974         /*
1975          * the good excuse for this mess is ... the firmware.
1976          * The dummy TIM MUST be at the end of the beacon frame,
1977          * because it'll be overwritten!
1978          */
1979
1980         struct ieee80211_mgmt *mgmt = (void *)skb->data;
1981         u8 *pos, *end;
1982
1983         if (skb->len <= sizeof(mgmt))
1984                 return -EINVAL;
1985
1986         pos = (u8 *)mgmt->u.beacon.variable;
1987         end = skb->data + skb->len;
1988         while (pos < end) {
1989                 if (pos + 2 + pos[1] > end)
1990                         return -EINVAL;
1991
1992                 if (pos[0] == WLAN_EID_TIM) {
1993                         u8 dtim_len = pos[1];
1994                         u8 dtim_period = pos[3];
1995                         u8 *next = pos + 2 + dtim_len;
1996
1997                         if (dtim_len < 3)
1998                                 return -EINVAL;
1999
2000                         memmove(pos, next, end - next);
2001
2002                         if (dtim_len > 3)
2003                                 skb_trim(skb, skb->len - (dtim_len - 3));
2004
2005                         pos = end - (dtim_len + 2);
2006
2007                         /* add the dummy at the end */
2008                         pos[0] = WLAN_EID_TIM;
2009                         pos[1] = 3;
2010                         pos[2] = 0;
2011                         pos[3] = dtim_period;
2012                         pos[4] = 0;
2013                         return 0;
2014                 }
2015                 pos += 2 + pos[1];
2016         }
2017         return 0;
2018 }
2019
2020 static int p54_beacon_update(struct ieee80211_hw *dev,
2021                         struct ieee80211_vif *vif)
2022 {
2023         struct p54_common *priv = dev->priv;
2024         struct sk_buff *beacon;
2025         int ret;
2026
2027         if (priv->cached_beacon) {
2028                 p54_tx_cancel(dev, priv->cached_beacon);
2029                 /* wait for the last beacon the be freed */
2030                 msleep(10);
2031         }
2032
2033         beacon = ieee80211_beacon_get(dev, vif);
2034         if (!beacon)
2035                 return -ENOMEM;
2036         ret = p54_beacon_tim(beacon);
2037         if (ret)
2038                 return ret;
2039         ret = p54_tx(dev, beacon);
2040         if (ret)
2041                 return ret;
2042         priv->cached_beacon = beacon;
2043         priv->tsf_high32 = 0;
2044         priv->tsf_low32 = 0;
2045
2046         return 0;
2047 }
2048
2049 static int p54_start(struct ieee80211_hw *dev)
2050 {
2051         struct p54_common *priv = dev->priv;
2052         int err;
2053
2054         mutex_lock(&priv->conf_mutex);
2055         err = priv->open(dev);
2056         if (err)
2057                 goto out;
2058         P54_SET_QUEUE(priv->qos_params[0], 0x0002, 0x0003, 0x0007, 47);
2059         P54_SET_QUEUE(priv->qos_params[1], 0x0002, 0x0007, 0x000f, 94);
2060         P54_SET_QUEUE(priv->qos_params[2], 0x0003, 0x000f, 0x03ff, 0);
2061         P54_SET_QUEUE(priv->qos_params[3], 0x0007, 0x000f, 0x03ff, 0);
2062         err = p54_set_edcf(dev);
2063         if (err)
2064                 goto out;
2065
2066         memset(priv->bssid, ~0, ETH_ALEN);
2067         priv->mode = NL80211_IFTYPE_MONITOR;
2068         err = p54_setup_mac(dev);
2069         if (err) {
2070                 priv->mode = NL80211_IFTYPE_UNSPECIFIED;
2071                 goto out;
2072         }
2073
2074         queue_delayed_work(dev->workqueue, &priv->work, 0);
2075
2076         priv->softled_state = 0;
2077         err = p54_set_leds(dev);
2078
2079 out:
2080         mutex_unlock(&priv->conf_mutex);
2081         return err;
2082 }
2083
2084 static void p54_stop(struct ieee80211_hw *dev)
2085 {
2086         struct p54_common *priv = dev->priv;
2087
2088         mutex_lock(&priv->conf_mutex);
2089         priv->mode = NL80211_IFTYPE_UNSPECIFIED;
2090         priv->softled_state = 0;
2091         p54_set_leds(dev);
2092
2093 #ifdef CONFIG_P54_LEDS
2094         cancel_delayed_work_sync(&priv->led_work);
2095 #endif /* CONFIG_P54_LEDS */
2096         cancel_delayed_work_sync(&priv->work);
2097         if (priv->cached_beacon)
2098                 p54_tx_cancel(dev, priv->cached_beacon);
2099
2100         priv->stop(dev);
2101         skb_queue_purge(&priv->tx_queue);
2102         priv->cached_beacon = NULL;
2103         priv->tsf_high32 = priv->tsf_low32 = 0;
2104         mutex_unlock(&priv->conf_mutex);
2105 }
2106
2107 static int p54_add_interface(struct ieee80211_hw *dev,
2108                              struct ieee80211_if_init_conf *conf)
2109 {
2110         struct p54_common *priv = dev->priv;
2111
2112         mutex_lock(&priv->conf_mutex);
2113         if (priv->mode != NL80211_IFTYPE_MONITOR) {
2114                 mutex_unlock(&priv->conf_mutex);
2115                 return -EOPNOTSUPP;
2116         }
2117
2118         priv->vif = conf->vif;
2119
2120         switch (conf->type) {
2121         case NL80211_IFTYPE_STATION:
2122         case NL80211_IFTYPE_ADHOC:
2123         case NL80211_IFTYPE_AP:
2124         case NL80211_IFTYPE_MESH_POINT:
2125                 priv->mode = conf->type;
2126                 break;
2127         default:
2128                 mutex_unlock(&priv->conf_mutex);
2129                 return -EOPNOTSUPP;
2130         }
2131
2132         memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
2133         p54_setup_mac(dev);
2134         mutex_unlock(&priv->conf_mutex);
2135         return 0;
2136 }
2137
2138 static void p54_remove_interface(struct ieee80211_hw *dev,
2139                                  struct ieee80211_if_init_conf *conf)
2140 {
2141         struct p54_common *priv = dev->priv;
2142
2143         mutex_lock(&priv->conf_mutex);
2144         priv->vif = NULL;
2145         if (priv->cached_beacon)
2146                 p54_tx_cancel(dev, priv->cached_beacon);
2147         priv->mode = NL80211_IFTYPE_MONITOR;
2148         memset(priv->mac_addr, 0, ETH_ALEN);
2149         memset(priv->bssid, 0, ETH_ALEN);
2150         p54_setup_mac(dev);
2151         mutex_unlock(&priv->conf_mutex);
2152 }
2153
2154 static int p54_config(struct ieee80211_hw *dev, u32 changed)
2155 {
2156         int ret = 0;
2157         struct p54_common *priv = dev->priv;
2158         struct ieee80211_conf *conf = &dev->conf;
2159
2160         mutex_lock(&priv->conf_mutex);
2161         if (changed & IEEE80211_CONF_CHANGE_POWER)
2162                 priv->output_power = conf->power_level << 2;
2163         if (changed & IEEE80211_CONF_CHANGE_RADIO_ENABLED) {
2164                 ret = p54_setup_mac(dev);
2165                 if (ret)
2166                         goto out;
2167         }
2168         if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
2169                 ret = p54_scan(dev, P54_SCAN_EXIT, 0);
2170                 if (ret)
2171                         goto out;
2172         }
2173         if (changed & IEEE80211_CONF_CHANGE_PS) {
2174                 ret = p54_set_ps(dev);
2175                 if (ret)
2176                         goto out;
2177         }
2178
2179 out:
2180         mutex_unlock(&priv->conf_mutex);
2181         return ret;
2182 }
2183
2184 static void p54_configure_filter(struct ieee80211_hw *dev,
2185                                  unsigned int changed_flags,
2186                                  unsigned int *total_flags,
2187                                  int mc_count, struct dev_mc_list *mclist)
2188 {
2189         struct p54_common *priv = dev->priv;
2190
2191         *total_flags &= FIF_PROMISC_IN_BSS |
2192                         FIF_OTHER_BSS;
2193
2194         priv->filter_flags = *total_flags;
2195
2196         if (changed_flags & (FIF_PROMISC_IN_BSS | FIF_OTHER_BSS))
2197                 p54_setup_mac(dev);
2198 }
2199
2200 static int p54_conf_tx(struct ieee80211_hw *dev, u16 queue,
2201                        const struct ieee80211_tx_queue_params *params)
2202 {
2203         struct p54_common *priv = dev->priv;
2204         int ret;
2205
2206         mutex_lock(&priv->conf_mutex);
2207         if ((params) && !(queue > 4)) {
2208                 P54_SET_QUEUE(priv->qos_params[queue], params->aifs,
2209                         params->cw_min, params->cw_max, params->txop);
2210                 ret = p54_set_edcf(dev);
2211         } else
2212                 ret = -EINVAL;
2213         mutex_unlock(&priv->conf_mutex);
2214         return ret;
2215 }
2216
2217 static int p54_init_xbow_synth(struct ieee80211_hw *dev)
2218 {
2219         struct p54_common *priv = dev->priv;
2220         struct sk_buff *skb;
2221         struct p54_xbow_synth *xbow;
2222
2223         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*xbow),
2224                             P54_CONTROL_TYPE_XBOW_SYNTH_CFG, GFP_KERNEL);
2225         if (!skb)
2226                 return -ENOMEM;
2227
2228         xbow = (struct p54_xbow_synth *)skb_put(skb, sizeof(*xbow));
2229         xbow->magic1 = cpu_to_le16(0x1);
2230         xbow->magic2 = cpu_to_le16(0x2);
2231         xbow->freq = cpu_to_le16(5390);
2232         memset(xbow->padding, 0, sizeof(xbow->padding));
2233         priv->tx(dev, skb);
2234         return 0;
2235 }
2236
2237 static void p54_work(struct work_struct *work)
2238 {
2239         struct p54_common *priv = container_of(work, struct p54_common,
2240                                                work.work);
2241         struct ieee80211_hw *dev = priv->hw;
2242         struct sk_buff *skb;
2243
2244         if (unlikely(priv->mode == NL80211_IFTYPE_UNSPECIFIED))
2245                 return ;
2246
2247         /*
2248          * TODO: walk through tx_queue and do the following tasks
2249          *      1. initiate bursts.
2250          *      2. cancel stuck frames / reset the device if necessary.
2251          */
2252
2253         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL,
2254                             sizeof(struct p54_statistics),
2255                             P54_CONTROL_TYPE_STAT_READBACK, GFP_KERNEL);
2256         if (!skb)
2257                 return ;
2258
2259         priv->tx(dev, skb);
2260 }
2261
2262 static int p54_get_stats(struct ieee80211_hw *dev,
2263                          struct ieee80211_low_level_stats *stats)
2264 {
2265         struct p54_common *priv = dev->priv;
2266
2267         memcpy(stats, &priv->stats, sizeof(*stats));
2268         return 0;
2269 }
2270
2271 static int p54_get_tx_stats(struct ieee80211_hw *dev,
2272                             struct ieee80211_tx_queue_stats *stats)
2273 {
2274         struct p54_common *priv = dev->priv;
2275
2276         memcpy(stats, &priv->tx_stats[P54_QUEUE_DATA],
2277                sizeof(stats[0]) * dev->queues);
2278         return 0;
2279 }
2280
2281 static void p54_bss_info_changed(struct ieee80211_hw *dev,
2282                                  struct ieee80211_vif *vif,
2283                                  struct ieee80211_bss_conf *info,
2284                                  u32 changed)
2285 {
2286         struct p54_common *priv = dev->priv;
2287         int ret;
2288
2289         mutex_lock(&priv->conf_mutex);
2290         if (changed & BSS_CHANGED_BSSID) {
2291                 memcpy(priv->bssid, info->bssid, ETH_ALEN);
2292                 ret = p54_setup_mac(dev);
2293                 if (ret)
2294                         goto out;
2295         }
2296
2297         if (changed & BSS_CHANGED_BEACON) {
2298                 ret = p54_scan(dev, P54_SCAN_EXIT, 0);
2299                 if (ret)
2300                         goto out;
2301                 ret = p54_setup_mac(dev);
2302                 if (ret)
2303                         goto out;
2304                 ret = p54_beacon_update(dev, vif);
2305                 if (ret)
2306                         goto out;
2307         }
2308         /* XXX: this mimics having two callbacks... clean up */
2309  out:
2310         mutex_unlock(&priv->conf_mutex);
2311
2312         if (changed & (BSS_CHANGED_ERP_SLOT | BSS_CHANGED_BEACON)) {
2313                 priv->use_short_slot = info->use_short_slot;
2314                 p54_set_edcf(dev);
2315         }
2316         if (changed & BSS_CHANGED_BASIC_RATES) {
2317                 if (dev->conf.channel->band == IEEE80211_BAND_5GHZ)
2318                         priv->basic_rate_mask = (info->basic_rates << 4);
2319                 else
2320                         priv->basic_rate_mask = info->basic_rates;
2321                 p54_setup_mac(dev);
2322                 if (priv->fw_var >= 0x500)
2323                         p54_scan(dev, P54_SCAN_EXIT, 0);
2324         }
2325         if (changed & BSS_CHANGED_ASSOC) {
2326                 if (info->assoc) {
2327                         priv->aid = info->aid;
2328                         priv->wakeup_timer = info->beacon_int *
2329                                              info->dtim_period * 5;
2330                         p54_setup_mac(dev);
2331                 }
2332         }
2333 }
2334
2335 static int p54_set_key(struct ieee80211_hw *dev, enum set_key_cmd cmd,
2336                        struct ieee80211_vif *vif, struct ieee80211_sta *sta,
2337                        struct ieee80211_key_conf *key)
2338 {
2339         struct p54_common *priv = dev->priv;
2340         struct sk_buff *skb;
2341         struct p54_keycache *rxkey;
2342         int slot, ret = 0;
2343         u8 algo = 0;
2344
2345         if (modparam_nohwcrypt)
2346                 return -EOPNOTSUPP;
2347
2348         mutex_lock(&priv->conf_mutex);
2349         if (cmd == SET_KEY) {
2350                 switch (key->alg) {
2351                 case ALG_TKIP:
2352                         if (!(priv->privacy_caps & (BR_DESC_PRIV_CAP_MICHAEL |
2353                               BR_DESC_PRIV_CAP_TKIP))) {
2354                                 ret = -EOPNOTSUPP;
2355                                 goto out_unlock;
2356                         }
2357                         key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
2358                         algo = P54_CRYPTO_TKIPMICHAEL;
2359                         break;
2360                 case ALG_WEP:
2361                         if (!(priv->privacy_caps & BR_DESC_PRIV_CAP_WEP)) {
2362                                 ret = -EOPNOTSUPP;
2363                                 goto out_unlock;
2364                         }
2365                         key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
2366                         algo = P54_CRYPTO_WEP;
2367                         break;
2368                 case ALG_CCMP:
2369                         if (!(priv->privacy_caps & BR_DESC_PRIV_CAP_AESCCMP)) {
2370                                 ret = -EOPNOTSUPP;
2371                                 goto out_unlock;
2372                         }
2373                         key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
2374                         algo = P54_CRYPTO_AESCCMP;
2375                         break;
2376                 default:
2377                         ret = -EOPNOTSUPP;
2378                         goto out_unlock;
2379                 }
2380                 slot = bitmap_find_free_region(priv->used_rxkeys,
2381                                                priv->rx_keycache_size, 0);
2382
2383                 if (slot < 0) {
2384                         /*
2385                          * The device supports the choosen algorithm, but the
2386                          * firmware does not provide enough key slots to store
2387                          * all of them.
2388                          * But encryption offload for outgoing frames is always
2389                          * possible, so we just pretend that the upload was
2390                          * successful and do the decryption in software.
2391                          */
2392
2393                         /* mark the key as invalid. */
2394                         key->hw_key_idx = 0xff;
2395                         goto out_unlock;
2396                 }
2397         } else {
2398                 slot = key->hw_key_idx;
2399
2400                 if (slot == 0xff) {
2401                         /* This key was not uploaded into the rx key cache. */
2402
2403                         goto out_unlock;
2404                 }
2405
2406                 bitmap_release_region(priv->used_rxkeys, slot, 0);
2407                 algo = 0;
2408         }
2409
2410         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*rxkey),
2411                             P54_CONTROL_TYPE_RX_KEYCACHE, GFP_KERNEL);
2412         if (!skb) {
2413                 bitmap_release_region(priv->used_rxkeys, slot, 0);
2414                 ret = -ENOSPC;
2415                 goto out_unlock;
2416         }
2417
2418         rxkey = (struct p54_keycache *)skb_put(skb, sizeof(*rxkey));
2419         rxkey->entry = slot;
2420         rxkey->key_id = key->keyidx;
2421         rxkey->key_type = algo;
2422         if (sta)
2423                 memcpy(rxkey->mac, sta->addr, ETH_ALEN);
2424         else
2425                 memset(rxkey->mac, ~0, ETH_ALEN);
2426         if (key->alg != ALG_TKIP) {
2427                 rxkey->key_len = min((u8)16, key->keylen);
2428                 memcpy(rxkey->key, key->key, rxkey->key_len);
2429         } else {
2430                 rxkey->key_len = 24;
2431                 memcpy(rxkey->key, key->key, 16);
2432                 memcpy(&(rxkey->key[16]), &(key->key
2433                         [NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY]), 8);
2434         }
2435
2436         priv->tx(dev, skb);
2437         key->hw_key_idx = slot;
2438
2439 out_unlock:
2440         mutex_unlock(&priv->conf_mutex);
2441         return ret;
2442 }
2443
2444 #ifdef CONFIG_P54_LEDS
2445 static void p54_update_leds(struct work_struct *work)
2446 {
2447         struct p54_common *priv = container_of(work, struct p54_common,
2448                                                led_work.work);
2449         int err, i, tmp, blink_delay = 400;
2450         bool rerun = false;
2451
2452         /* Don't toggle the LED, when the device is down. */
2453         if (priv->mode == NL80211_IFTYPE_UNSPECIFIED)
2454                 return ;
2455
2456         for (i = 0; i < ARRAY_SIZE(priv->leds); i++)
2457                 if (priv->leds[i].toggled) {
2458                         priv->softled_state |= BIT(i);
2459
2460                         tmp = 70 + 200 / (priv->leds[i].toggled);
2461                         if (tmp < blink_delay)
2462                                 blink_delay = tmp;
2463
2464                         if (priv->leds[i].led_dev.brightness == LED_OFF)
2465                                 rerun = true;
2466
2467                         priv->leds[i].toggled =
2468                                 !!priv->leds[i].led_dev.brightness;
2469                 } else
2470                         priv->softled_state &= ~BIT(i);
2471
2472         err = p54_set_leds(priv->hw);
2473         if (err && net_ratelimit())
2474                 printk(KERN_ERR "%s: failed to update LEDs.\n",
2475                         wiphy_name(priv->hw->wiphy));
2476
2477         if (rerun)
2478                 queue_delayed_work(priv->hw->workqueue, &priv->led_work,
2479                         msecs_to_jiffies(blink_delay));
2480 }
2481
2482 static void p54_led_brightness_set(struct led_classdev *led_dev,
2483                                    enum led_brightness brightness)
2484 {
2485         struct p54_led_dev *led = container_of(led_dev, struct p54_led_dev,
2486                                                led_dev);
2487         struct ieee80211_hw *dev = led->hw_dev;
2488         struct p54_common *priv = dev->priv;
2489
2490         if (priv->mode == NL80211_IFTYPE_UNSPECIFIED)
2491                 return ;
2492
2493         if (brightness) {
2494                 led->toggled++;
2495                 queue_delayed_work(priv->hw->workqueue, &priv->led_work,
2496                                    HZ/10);
2497         }
2498 }
2499
2500 static int p54_register_led(struct ieee80211_hw *dev,
2501                             unsigned int led_index,
2502                             char *name, char *trigger)
2503 {
2504         struct p54_common *priv = dev->priv;
2505         struct p54_led_dev *led = &priv->leds[led_index];
2506         int err;
2507
2508         if (led->registered)
2509                 return -EEXIST;
2510
2511         snprintf(led->name, sizeof(led->name), "p54-%s::%s",
2512                  wiphy_name(dev->wiphy), name);
2513         led->hw_dev = dev;
2514         led->index = led_index;
2515         led->led_dev.name = led->name;
2516         led->led_dev.default_trigger = trigger;
2517         led->led_dev.brightness_set = p54_led_brightness_set;
2518
2519         err = led_classdev_register(wiphy_dev(dev->wiphy), &led->led_dev);
2520         if (err)
2521                 printk(KERN_ERR "%s: Failed to register %s LED.\n",
2522                         wiphy_name(dev->wiphy), name);
2523         else
2524                 led->registered = 1;
2525
2526         return err;
2527 }
2528
2529 static int p54_init_leds(struct ieee80211_hw *dev)
2530 {
2531         struct p54_common *priv = dev->priv;
2532         int err;
2533
2534         /*
2535          * TODO:
2536          * Figure out if the EEPROM contains some hints about the number
2537          * of available/programmable LEDs of the device.
2538          */
2539
2540         INIT_DELAYED_WORK(&priv->led_work, p54_update_leds);
2541
2542         err = p54_register_led(dev, 0, "assoc",
2543                                ieee80211_get_assoc_led_name(dev));
2544         if (err)
2545                 return err;
2546
2547         err = p54_register_led(dev, 1, "tx",
2548                                ieee80211_get_tx_led_name(dev));
2549         if (err)
2550                 return err;
2551
2552         err = p54_register_led(dev, 2, "rx",
2553                                ieee80211_get_rx_led_name(dev));
2554         if (err)
2555                 return err;
2556
2557         err = p54_register_led(dev, 3, "radio",
2558                                ieee80211_get_radio_led_name(dev));
2559         if (err)
2560                 return err;
2561
2562         err = p54_set_leds(dev);
2563         return err;
2564 }
2565
2566 static void p54_unregister_leds(struct ieee80211_hw *dev)
2567 {
2568         struct p54_common *priv = dev->priv;
2569         int i;
2570
2571         for (i = 0; i < ARRAY_SIZE(priv->leds); i++)
2572                 if (priv->leds[i].registered)
2573                         led_classdev_unregister(&priv->leds[i].led_dev);
2574 }
2575 #endif /* CONFIG_P54_LEDS */
2576
2577 static const struct ieee80211_ops p54_ops = {
2578         .tx                     = p54_tx,
2579         .start                  = p54_start,
2580         .stop                   = p54_stop,
2581         .add_interface          = p54_add_interface,
2582         .remove_interface       = p54_remove_interface,
2583         .set_tim                = p54_set_tim,
2584         .sta_notify             = p54_sta_notify,
2585         .set_key                = p54_set_key,
2586         .config                 = p54_config,
2587         .bss_info_changed       = p54_bss_info_changed,
2588         .configure_filter       = p54_configure_filter,
2589         .conf_tx                = p54_conf_tx,
2590         .get_stats              = p54_get_stats,
2591         .get_tx_stats           = p54_get_tx_stats
2592 };
2593
2594 struct ieee80211_hw *p54_init_common(size_t priv_data_len)
2595 {
2596         struct ieee80211_hw *dev;
2597         struct p54_common *priv;
2598
2599         dev = ieee80211_alloc_hw(priv_data_len, &p54_ops);
2600         if (!dev)
2601                 return NULL;
2602
2603         priv = dev->priv;
2604         priv->hw = dev;
2605         priv->mode = NL80211_IFTYPE_UNSPECIFIED;
2606         priv->basic_rate_mask = 0x15f;
2607         skb_queue_head_init(&priv->tx_queue);
2608         dev->flags = IEEE80211_HW_RX_INCLUDES_FCS |
2609                      IEEE80211_HW_SIGNAL_DBM |
2610                      IEEE80211_HW_NOISE_DBM;
2611
2612         dev->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
2613                                       BIT(NL80211_IFTYPE_ADHOC) |
2614                                       BIT(NL80211_IFTYPE_AP) |
2615                                       BIT(NL80211_IFTYPE_MESH_POINT);
2616
2617         dev->channel_change_time = 1000;        /* TODO: find actual value */
2618         priv->tx_stats[P54_QUEUE_BEACON].limit = 1;
2619         priv->tx_stats[P54_QUEUE_FWSCAN].limit = 1;
2620         priv->tx_stats[P54_QUEUE_MGMT].limit = 3;
2621         priv->tx_stats[P54_QUEUE_CAB].limit = 3;
2622         priv->tx_stats[P54_QUEUE_DATA].limit = 5;
2623         dev->queues = 1;
2624         priv->noise = -94;
2625         /*
2626          * We support at most 8 tries no matter which rate they're at,
2627          * we cannot support max_rates * max_rate_tries as we set it
2628          * here, but setting it correctly to 4/2 or so would limit us
2629          * artificially if the RC algorithm wants just two rates, so
2630          * let's say 4/7, we'll redistribute it at TX time, see the
2631          * comments there.
2632          */
2633         dev->max_rates = 4;
2634         dev->max_rate_tries = 7;
2635         dev->extra_tx_headroom = sizeof(struct p54_hdr) + 4 +
2636                                  sizeof(struct p54_tx_data);
2637
2638         mutex_init(&priv->conf_mutex);
2639         init_completion(&priv->eeprom_comp);
2640         INIT_DELAYED_WORK(&priv->work, p54_work);
2641
2642         return dev;
2643 }
2644 EXPORT_SYMBOL_GPL(p54_init_common);
2645
2646 int p54_register_common(struct ieee80211_hw *dev, struct device *pdev)
2647 {
2648         int err;
2649
2650         err = ieee80211_register_hw(dev);
2651         if (err) {
2652                 dev_err(pdev, "Cannot register device (%d).\n", err);
2653                 return err;
2654         }
2655
2656 #ifdef CONFIG_P54_LEDS
2657         err = p54_init_leds(dev);
2658         if (err)
2659                 return err;
2660 #endif /* CONFIG_P54_LEDS */
2661
2662         dev_info(pdev, "is registered as '%s'\n", wiphy_name(dev->wiphy));
2663         return 0;
2664 }
2665 EXPORT_SYMBOL_GPL(p54_register_common);
2666
2667 void p54_free_common(struct ieee80211_hw *dev)
2668 {
2669         struct p54_common *priv = dev->priv;
2670         kfree(priv->iq_autocal);
2671         kfree(priv->output_limit);
2672         kfree(priv->curve_data);
2673         kfree(priv->used_rxkeys);
2674
2675 #ifdef CONFIG_P54_LEDS
2676         p54_unregister_leds(dev);
2677 #endif /* CONFIG_P54_LEDS */
2678 }
2679 EXPORT_SYMBOL_GPL(p54_free_common);